You might try switching to Redline MTL synth fluid for the tranny shift problem. That helped me on the mini I had. The plugs can be in pretty tight so make sure you can loosen both the fill and drain first elst you end up with an empty xmission you can't refill. It's around $7/qt.

1997 T-100 4X4 Xcab,Warn Hubs
02 Camry LE
2008 Yaris