Ben Johnson hamstring,lowerback work

Did Ben do any specialized hamstring lower back work? (i.e. Glute ham raises, Goodmornings,etc)

Can we post the photo of Ben in the start position with no shirt again? No 2?
Ben did reverse hypers with straight and bent legs as well as weighted hypers.

Charlie on bens comeback why did he suffer with his h/s consistantly.i know you were not working with him at this point but any thoughts?

Charlie also could you comment on bens work with Percy Duncan later on?