Harley isnt mean. Advice?

Question:
 As some of you may remember, Francisco is my little Sun Conure and we have a SI Eclectus hen named Scarlett. Today we added a Congo AG, Harley. Harley will be 3 years old on 4/17 and the couple we got him from were trying to get rid of him because they said he was mean. They got him from a breeder and he was on a seed diet and wouldnt eat pellets so they just kept giving him seeds. They say he wont step up and viciously bites. The man had sores all over his hands. Harley's wings are not clipped and he rarely got time outside of his cage because of that. The man also told us that the bird "would intentionally make noises his wife hated" and she would spray him with a spray bottle! We have had him home for about 3 hours. We are taking him to the vet first thing tomorrow for a check up and to get his wings clipped and nails trimmed. Tonight I gave him a mixture of 2 parts seed mix to 1 part pellet and added the same vitamin to his water that I give to my picky little Cisco. He also got the same veggie mix as my Ekkie. He is not shy and beeps, whistles, and pings quite a bit. We were told he has a large clean vocabulary, but so far I have heard him say "Harley, do you want the spray bottle?" and "I'll get the spray bottle" and still "Your gonna get the spray bottle." He repeats these sentances in between his beeps and pings. I have also heard "Harley, stop it!" and some hellooooos. I plan to NEVER mention the words "spray bottle" around him and give him plently of love and baths and nutritious food, and once he is a little more used to us, he will get "step-up" lessons. It only took Scarlett 2 10-minute sessions a day for a week to learn it. And we have to get the biting to stop. I know about the "evil eye" and "dont flinch an inch", so hopefully I wont get too many wounds on my hands ;) But, please, any advice is welcome. Since getting my first bird in Feb, I have devoured as many books on the subjuct as possible, but I know so many of you have taken in mistreated, "mean", and neglected birds and have experience and knowledge I can learn from. Harley's isnt a really bad case, but he came from a home where his owners didnt know some important bird basics and didnt bother to learn them either. So I would love any advice, stories, and help you all can offer. Thanks so much!
Answer:
 Oh dear, poor Harley! It sounds like Harley was an ornament that the owners didn't realise could talk & they didn't want him talking at all. I'm glad he's left that home. Well, you do sound like you have everything under control. The usual don't (or try not to) flinch at bites. Give him time to adjust to his new family & get to know you without too much or no physical contact for at least 1 week. Earn his trust, he's a re-homed. He may either take a very long time to realise you mean no harm or he might realise it straight away & be at ease with you quickly. Allow him to see your interactions with your other birds so he can see how loving & playful you all are with each other. If you can see Harley look on his face that says, 'back off', then back off & try later.
Answer:
 First of all, thankyou so much for taking this poor, misunderstood bird into your hearts and your lives. Even if he seems quiet and unagressive now, dont forget this is still the honeymoon stage. Harley will very possibly test you to your limits as time passes by. You seem prepared for, and accepting of that, that is wonderful. A great tip for getting a bird who attacks at 'step-up' is to use a stick for him to step up on. let him get used to seeing the stick, if he shows no fear (you never know what has gone on his life) then place it on top of his cage for a few days so he learns that it is not going to hurt him. A large plastic coke bottle cut in half will make a superb protector for you hand should he decide to run up the stick and have a go at the hand holding it! Slide the top end of the bottle over the stick so tha your hand is safely protected within the cut off open end. I find it so sad that he has had 'misting' used as a puinishment. It should be a joy to him, a chance to open his wings and feel the soothing cool comfort of fresh clear water on his body. He may accept misting happily still, but always tell him how GOOD he is when misting him. Also, I would spray the mist into the air above him, so it falls gently on him. Is your vet an avian vet? If he does agree to clip harleys wings, the method I prefer above all others is the outer 6 - 8 (maximum!) primaries on both wings to be clipped. I have a story somewhere in my files about an African grey called George,