i recently rebuilt my tranny on my 04 3500. installed sun coast 3d torqe converter, a billet input shaft, and transgo shift kit. the full tranny is rebuilt with new parts except the housing and the front rear drums. the question is, when i take off 1st, 2nd, 3rd, are ok, but 4th feels like it slips or doesn't lock down properly is there a way to adjust. 2nd question is when i am coming to a stop, it down shifts really hard back to 1st is that normal?