To check for a frame with the body on take 5-6 pieces of straight wire(welding rod works best) about 19" long, bend one end over1/2-3/4" 90 DEG. & and make sure all long arm's are exactly the same length, hang the short arm"s on top of the clean frame between frame & welt evenly spaced down one side,now eyeball the end's of the long arm's if your frame is bent onr or more end's will be lower than the rest.
I got this tip from John Hash at a Gallopin" Gertie Club workshop
I got this tip from John Hash at a Gallopin" Gertie Club workshop