Carl, yes you have to deal with some spring back with flat stock and wire bends.

This is where the protractor helps. An example, what I do, say a 45* bend. First bend I’ll take it to 45*. Then using protractor I’ll check to see how many degrees of spring back I get. Say 10*, so I’ll use 1/2 of 10*. So second bend I’ll take it to 50*. Check the spring back and use 1/2 again. This way I can get it right on the bend degrees needed. What you don’t want to do is over bend the flat stock. Under bend is good. Over bend is not good.

Just use some left over flat stock as test pieces with the bender you have. With some practice you can get the right bend. Just have to practice a bit.

Here is a wire bender I made. It makes left or right bends and left or right coils. The tail wheel pictured was made on this bender. I have to deal with a little Wire spring back too.