Hello again, first off I would like to thank everyone for their helpful suggestions. I tried everything on all of them. Still my window on the drivers side is very hard to roll up. I am wondering about the regulator, it does not have any up and down play whioch I would interpert as worn teeth, but it does move from side to side. Are there any substitutes for a 240Z regulator? My junk yard is woefully short on old Z's. By the way when I coax the window as far as I can with the crank it is a full 2 inches from meeting at the back & top, I can then pull it into place but would prefer a more sophisticated technique of closing. Thank you for all your previous help and look forward to more imformation.