[mrlaser]

I did do the Magic Marker on all the seats. The marker was removed with a few turns of the valve lapping stick.

Fortunately,or unfortunately the motor is in the car, not on a stand. That is the rationale for the shop vac and something like PB Blaster to check for leaks. I suppose that I could connect the vacuum to the tail pipe on each side to do the exhaust side. Thanks again for your Imput.