Great thanks for the advice. Gives me time to rebuild my piggy bank after this $$$ service!

They had to replace the engine, coil, and air pump wiring harnesses and replaced a cracked vacuum block. I should be getting my car back today and hope it's gonna run smoother now!

Is there anything I should have asked the Mech to check as well?

I have read alot about the OVP here but don't understand what the symptoms would be to require replacement.