99 OBW Drivers Window problem

Hi, I have a problem with the drivers window in my 99 OBW. Most of the time when the window is all the way down into the door, the window seems to get into a cycle where it can't seem to seat and moves up slightly, then down, then up, then down, well, you get the idea. Also, when this happens, I need to hold the window switch in the up position for a few seconds before the windows stops cycling and responds to the up command from the switch. If I don't allow the window to go all the way into the door, but remain slightly up, the problem does not happen. Any ideas how to fix? Thanks.