So, something worked. I installed new plugs, used MAF cleaner to clean the MAF, installed a new air filter, changed engine oil/ filter and changed the transmission fluid. When I added the new transmission fluid I also added some lucas oil to help condition and stop the slipping. While I was installing the new plugs I also cleaned the butterfly valve (throttle body). I took a small test drive and had no issues. My wife drove her usual route around town and had no issues. Tomorrow we will drive further to see if I still have no issues.