I always keep mine locked in the garage, but even with the cold it was a rough start this morning. Took a few seconds to even out the idle. I can't wait for this stuff to be done. Potentially moving to Austin in the Fall, back to a climate with slightly less winter.
Did your exhaust leak noise go away once the car warmed up? Could be at one of the flanges where it heats up enough to expand once you are driving.