Started putting the motor together today. I installed new bearings, ported the crank, and assembled the lower end. I checked piston clearance, and it hit the top of the head. The previous builder decked the case to increase the compression ratio. To overcome this, I took a little off the head of the new piston. I need to get some hardware, and I will install the piston and cylinder, but first I will clean up the exhaust ports and transfer ports. Always looking for a little extra horsepower!