i blew a head gasket out on the trails. has not run since. the intake valves were looking pretty shot so they were replaced. The center intake valve will not make clearances even with the smallest shim. I had .02 taken off the top of the valve but it still wont clear with the smallest shim. Could this be my compression problem? Also i put a weisco 13.5:1 piston in. The stock piston was really wobbly in the cylinder. The new piston fits well and im still left with no compression. New timing chain was also put on. Any help would be great.