Fuses are okay, vac leaks are okay, OVP fuses are okay but doesn't the OVP relay screws up its self internal causing weird electrical faults?, one of the thinner return spring was always broken the one that sits under the air mass meter, checks codes monthly and he has found a dead spot on the potentiometer tracks so that might be an issue too.

As for the frustration it happens... but goes away and he is taking the diesel swap seriously and it'll take place in one shop two hoists side by side.
thanks
Sincerely,
-Amanda