[Grace3527]

Every so often (at random times, I dont see a pattern) the four wheeler will completely cut out (some times it will stall, some times it wont) and by the time you down shift to neutral it will other turn back on like nothing happened (if it stalls) or it will continue running like nothing happened. Any suggestions to what it might be?

 

[Duck0fDeath]

Are you saying the RPM's drop like it's going to stall out but if you shift to neutral before it dies it starts acting right again? When it dies, does it always immediately start back up and run fine for awhile?

 

[Goober]

Every so often (at random times, I dont see a pattern) the four wheeler will completely cut out (some times it will stall, some times it wont) and by the time you down shift to neutral it will other turn back on like nothing happened (if it stalls) or it will continue running like nothing happened. Any suggestions to what it might be?

As Duck indicated please be more specific. is the engine dying or is throttle response cutting out? I would think the way you rebuilt the carb, with The swapping of parts—that’s gotta be no good.
These quads do not like mix n match