Need A833 advice

Hard to say! It was the first day on the road in about 10 months. The engine is only tuned enough to get running, and it was lacking power on the drive, so it's possible the trans was fighting me. Not sure on that yet. Starts OK.
But you're saying the trans wasn't making any loud whining noises or popping out of gear or shifting improperly this is just something you discovered while pushing it?
I'm starting to think that you may be overthinking it...