Im having a problem with my 2 stroke and I hope somebody can point me in the right direction. After a rebuild Ive had some issues. Major one being the coolant pouring out of the overflow after a few minutes of riding....I keep thinking its the headgasket but I am sure its not leaking past it (pressure test, leakdown test, cylinder leakdown test) everything checks out ok it seems to have stopped for now. But now when I start it up with the choke it revs sky high I have to quickly turn off the choke cause it sounds like its going to rev to death. To me I think its an air leak somewhere but all test come out perfect Im completely stumped right now