When I purchased my 86 GN 11 years ago I only had Reverse, Neutral, Drive (not really) and Overdrive. In drive I had a rod knock but not in overdrive. Since I didn't have either 2 or 1, I just figured the transmission needed to be fixed. Well, 2 years ago I lost the trans and had it rebuilt. The guy who rebuilt it said that it had a nice shift kit and he just packed it. Now as for the rod knock, that has cost me an engine rebuild. The problem that I have is that sometimes the transmission changes at high rpm's then immediately changes into the next gear. I have heard of guys burning pistons with the high rpm's. The guy I had rebuild the transmission has "gone into the wind" and hasn't been heard from in almost 1 year and can't check it out. Anyone have any similar problems? Is this bad for my rebuilt engine?