Hi Peter:
You are welcome. Are you aware that a few years ago a few such collectors worked to compile a detailed checklist of Dormand's and their variations? If it would be helpfull I could send you some info via mail with an address. My collection now stands at 51 different.
mark
mkbow2@surewest.net
P.S. N54 members my # of posts and join date shows Nov 2022. That is due to a computer glitch. I have actually been a member since about 2009. Just sayin.