Thanks for all the suggestions folks! Some real good information here.
Yes, I have encountered the electrostatic problem before. It wasn't too bad in my 35mm Zeiss because it is manual advance but my 645 is motor wind and just WON'T slow down!
I do have the equipment to test shutter speed so I will take Paul's advice and test my shutter at cold temps. It's December in Manitoba so we should have some -30C weather right around the corner.
It makes sense to keep the camera and film packs cold - I'll do that.
Thanks again for all the suggestions.
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