I know when I figure this out it will be an "of course you moron" moment, but I havn't looked at anything yet and I'd like your opinion. Here it is. This happened once and the car drives normally in all respects as of parking it a few minutes ago. 56 BN-2, stock brakes, overdrive works peachy, smooth in all gears, doesn't have any gearbox problems. The scenario: Drove 25 mi to work. After work ran a few errands around town ((about 75 degrees outside, nice). Stopped at a four way and when I went to pull away (in 2nd gear) it behaved as if I was standing on the brakes. Seemed to shift in and out of all gears, tried reverse, same thing. I actually stalled it a couple of times with no movement of the wheels. Then, all of a sudden, everything was good again. Finsihed my errands, drove 25 miles home. No problems. I think I now realize it may have done this a couple of times in the 2000 miles since I finished the rebuild. It was much more short lived in that I had convinced myself I was mistakenly in top gear when I was trying to pull away from a stop. I fiddled with the shift and it was fine. Now after this, I'm not so sure sure I was in 4th. It was the same sort of lugging, or stuck brake feeling, but it went right away. I'm going to look at the brakes first, although the pedal felt normal when this was going on, I thought that somehow perhaps pressure from my stop had been trapped downstream of the master cylinder. When I got off the freeway and onto the rural roads I tried to make it happen again, but no such luck. Sitting in my chair here, that is my best guess. Any thoughts?