How long have you had the birds and do you know if they were ever teased or abused or were they just not handled at all?
It's good that you've separated them for the purposes of training. Working on step-up with older, fearful birds will take a lot of time and patience but eventually you should be able to teach them to step-up. It could take weeks or months or even a year or more, mainly because you'll have to establish a history for trust with them before they will be willing to step-up.
You've probably already read
Michael's Taming & Training Guide but if you haven't that's a place to start.
A medium-sized bird such as an Amazon can deliver a really nasty bite but it's critical that you avoid bites and if a bite does happen you need to completely ignore it. I know if you get an Amazon bite on the flesh this can be impossible so probably what you should do is SLOWLY teach step-up on your arm first and eventually target them closer to your hand until they finally will stand on your hand. To ignore bites and give them a firm perch it would be best to wear a long-sleeved jacket or sweatshirt (or even two!) so there is a barrier in case you do get bitten. You hide your hand in the sleeve completely and once they will step-up onto your arm you slowly begin to show your hand, then move to having them step-up onto your arm without wearing the jacket.
See pictures and videos here.
angelblue wrote:MY issue is begininng to be over treat consumption. One of the birds favorite happens to be peanuts. WALL- E will not eat all day in anrticipation of treat training and I still try to give small pieces so as not to fill him up. ... Also they are malnourished which is the concern for overboard on treats.
If he is refusing to eat in anticipation of training you may need to have a session first thing in the morning before he gets his regular food and then no more for the rest of the day. Eventually he will learn he won't get treats later and will resort to eating his food.
Peanuts are not great to feed because they can contain aspergillus which is hard to treat and can be deadly. They are also kind of "junk" in that they are not of good nutritional value, especially for being so full of calories. It's okay to feed nuts as treats for training but especially with a malnourished bird choose a different nut that has a better nutritional value (such as walnuts or almonds) and hopefully if he likes peanuts so much he will like one of those nuts, too.