Hey guys. I recently picked up this quad as a mostly basket case. Bought a new Wiseco piston and had the cylinder bored to fit. After reassembly I keep blowing head gaskets. I sent the head and cylinder to the machine shop to get decked. When I got it back it’s still getting antifreeze into the cylinder. I’m torquing the head to 15 then to 20. Am I missing something here?

And I bypassed the water pump with a electric one so there isn’t any coolant entering there.