Mark - if they do take the pan off, get them to check the flange with a straight edge and make sure none of the bolt holes are tweaked. If they are, they can be flattened out with a couple of chunks of steel and a vice. Torque values for the bolts are in the 5HP service manual. You'll need a new gasket obviously, and I find Blue Hylomar helps seal them up nicely. Problem with doing it on the car is that two of the bolts at the back are obscured by the driver's side cat so its impossible to get a torque wrench on them. You have to get a feel for what the others are tightening to with the torque wrench and use a calibrated wrist on those two!
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