I just bought some cello skins today. I had trouble rolling with them, the cello is very slippery and the texture just doesn't "feel right" and it doesn't seem to grip the leaf the same way. I also felt as though it wouldn't make a perfect seal (It was wrinkled a bit though). Of course, they didn't have any 1 1/4 so I had to get "King Size" which is freaking four inches long and that gave me some trouble rolling. Oh yeah, and if you roll an inside-out cone like I do, I found the licking and sealing and tearing the excess pretty difficult also. Bottom line, maybe you should cut them to fit your machine. Oooh, I should try that now!!!