So my buddy thought his blaster blew his top end. After riding it it started to bog bad and not run. It also would backfire once when you would try to kick it over. We took the top end off thinking the skirt was broken but the top end was completely fine. We put it back together and now it won’t run at all. It will try to start for a second then die. It has compression, fuel, spark. The reeds were checked and completely fine. Carb was fully taken apart and cleaned. What could this be?