the gaskets that came with metra kits r janky, uneven. it came with 3 metal base gaskets, one paper gaskets.i had to run all of them. when i just ran the one base gasket, the piston hit the head like a piston stop...(high comp 50 cc head, kassar crank)
my rebuild is solid, before i run a new kitted bike out the door, i let it idle for a bit, spray carb cleaner to check for any leaks. etc. working all afternoon just to seize sucks...
i'm waiting on a 19mm, i think it will work awesome, 15mm on this wont be enough, its not regulated with reeds like on a polini, so the blowback fucks with the flow as the piston comes back for the charge.. but what do i know, we'll see. thanks