Just fitted new motor and trans into misses vt, new stuff has only 190xxxKM and worked perfect in donor car Got it all into the new one, didn't have enough trans fluid so had to put some dextron 2 in with it. We got it home and it went fine, drove somewhere later and the trans light came on, it began to clunk going into drive, and was struggling to change gears would change hard when it did. Got it home and it isn't low on trans fluid, didn't bend any lines during the change over and I left the loom attached so I don't think it could be a loose plug. Can anyone help me solve this