Depending on cranking speed, tester, if you had all the plugs out, etc if you have 125 psi on all of them with less than 10% variation, I would think about a cylinder leak-down test. Remember you can have, bad oil seals on the valves, bad oil rings, but good compression rings too. You may also want to pull the intake maniold off and see if you have oilly deposits on the intake valves indicating worn guides , bad seals or both. Questions?