Hello everyone, I'm replacing the piston rings in my 750. The rings are factory kawasaki, the part numbers match my manual. They are identical to my old rings. With new rings installed, the pistons are very tight in the cylinder. So tight that I can't turn the motor over with the crank bolt. The pistons were very hard to get in, even with a ring compressor. I'm sure I'm gonna have to take the pistons back out. But I just wanted some opinions before I start over. Thanks for your help.