2004 Honda Foreman 450 S

I just picked up a Honda Foreman 450 last Thursday loaded it right up and brought it to this past mudfest all day Friday it ran perfect wasn’t stalling ran a lot of mud but after letting it sit for a while it wouldn’t start, noticed there was a little water in the air box drained it drained the oil fired right back up then I put the air box lit on and it would stall out only running with the air box lid off you can see some gas shooting out of the intake tube, one of my buddies said it’s getting too much fuel
i was told it has a dyno jet kit, it’s also snorkeled, where do I start?