Those blades that are trapeze shaped that go into box cutters have always been the worst experience for me. Those things stunted my growth at learning how to cut grip properly it was always such a disaster, I'd just ask the shop to grip it for me, and cringe at myself. Then one day I used a fresh one of the other type that has the comfy rounded side on it for your fingers, and it changed everything. As long as I use those blades, I never have any issues with cutting clean and proper.
As far as bubbles go, in regards to jessup, black magic, or pepper, I never really get them. I line the grip up meticulously and start from one end and lay it down and press at the same time, working my way down to the other end. I feel like the quick and dirty method of just placing it on the board and then pressing from the center outward, is a recipe for bubbles. Might just need to switch up your technique? I can't comment on Mob since I heard and read it was thicker, creases, cuts like shit, etc. So I just avoided it.