New Guy from Dearborn Heights Mi.

Hello all, I work on motorcycles and mostly all types of fun toys, Currently working on a 2001 Polaris Scrambler 50 which someone installed a new carburetor.
I sandblasted the spark plug (very wet from oil & fuel) and replaced the fuel (looked like it had water in it) I also drained the carburetor bowl.
I set both the air/idle screws at 1.5 out it runs but has poor performance and there seems to be a lot of oil coming out of the exhaust.
I was wondering what is the correct spark plug gap & the correct setting for each carburetor set screws and what is acceptable compression for this machine.