I have what seems to be a regulator cable that's got tangled somehow. The motor sounds like it is trying, I hear a grating noise, but the window doesn't budge. I removed the door panel, and can push the window down manually so far, but not far enough, even with a fair amount of force, to get access to the plastic "dowels" that secure the window. Its my first attempt replacing the regulator on a Skoda, although I have done it on other cars without much trouble so I thought this would be fairly straightforward. I followed video instructions I found in this forum and it all looked easy enough but in the video there was nothing obstructing the window from sliding down to the required position. Has anyone had a similar experience ?