I love my 935 and have had no problems after a thorough cleaning.
What makes if NOT a great gun, is lack of consistency with their manufacturing.
It shouldn't be that one guy had no problems and they other guy has a major headache.
I happen to end up on the right side of things.....
Clean it again, try what Ned said, then go get a box of nitro 3.5's and break your shoulder.
Clean it again and you'll be fine
"I've been left for dead before but I'll still fight on, don't wait up, leave the light on, I'll be home soon"