I have a 95' Mach-1. PTO cylinder is 135psi and the MAG is 162psi. This has been checked on a good working compression tester. Oil in the cylinders increased both cylinders by 10 psi each. I have read 120-130psi on the 670 is normal, why would one cylinder be so high? (I have not run this sled yet either, I bought it with issues I need to fix in the fuel system) Am I missing something here?