@ejay1 there is a big misconception among this thread about functional/surgeon/working cuffs. Whatever you want to call them, they are used for a purpose. Yes, most tailors will shy away from shortening and/or lengthening functional cuffs. The proper way is to shorten via arm hole, however, fitting an 8" circle (arm hole) with a a 6" circle (sleeve hole/head) will never work (not sure if that analogy was the best). Our arms naturally "taper", hence, why it is very difficult to shorten via sleeve head.
HOWEVER, I recently met a tailor who takes a creative and a more economical route. He essentially removes the cuff button hole stitching and is able to shorten/lengthen without having the jacket sleeves look funny. He's done this to a few of my found SC's and they look great. I hope I explained that right but PM me and I can send you his contact info depending on where you live.