Bought a JD2 model 32 manual tube bender the other day but have not got any dies yet. What size and radius do you guys recommend? I was thinking of starting with a 1" die with a 4.5" radius for my first die. There not cheep so cant get more than one die at a time. Was thinking a 1" on the 4.5 and a 7/8 on 4.5 should do pretty much any thing I want with mini bike. Was at first thinking a 3/4 die but think I will be making my exhaust out of 7/8 instead. What are your thoughts?