Thanks for that. I think I have a problem with the transmission. Mind you, I have not started it since the engine rebuild several years ago, but the transmission seems to lock up in some gears (maybe 1st, 2nd) and it almost seems as if there may be something broken in the shifter. I  don't see how I can take a look inside at the gears without really tearing it down. Is there any relatively simple way to inspect the gears? 
          Cal