I just got a leak tester last week and started using it. Out of the four 15HP EV15T Kohler engines I measured, all were in the red zone. Significant leaks at the exhaust valve and rings. I have cleaned up the valves and that improved leak results(in yellow). Next I will be putting on the rings and scuffing(light hone) the cyclinder. After putting on the rings should I expect the leak results to be significanlty better immediately or will I have to run the engine in first? Don't know why I never invested in the $150 leak tester from ORiley.