Thanks Gary. You might be right about the airbox. I’ve heard that issue mentioned before and it never even crossed my mind that it could be what my problem is too. Maybe I lay my leg down a bit more after 5 laps. I do know that the airbox holes are pointed towards my leg a bit. Hope that is the problem, simple fix :)
I’ll check on that pickup tube too. It’s been on the kart since I bought it in October.