Well just to wrap this up properly, I made the trip to drop my son off at camp. did 650kms in a 11 hour period, and short of a few hiccups here and there, mostly on bigger hills, the car did quite well.
If your car is acting stupid in OD, or chugging from a stop, I would seriously recommend checking this part for yourselves! I have been harassing my motor and fuel systems and vacuum lines and etc etc etc, for months, and it turns out to be a loosened transmission piece!
It seems the nuts had probably vibrated loose, as there was no real signs of it being recently touched. Amazing that 8th of an inch that it can move, can make such an impact on your car. It was doing it at random. Sometimes it sat right, sometimes shifting moved it off point.
Well anyways, all should be well after I get a moment to find this elusive dot!
Thanks a lot bill, I think I can finally trust this car now.
1995 Bonneville SE