Please help - ideas to fix? Driver side goes down fine, but it's a gamble whether it will go back up. Have gotten it up with physical coaxing. It's like power just not getting to it. Passenger side goes down about 2.5 inches before it stops and makes a grinding noise. Goes back up fine til it reaches the top and grinds again. Might the drivers side be just a fuse?? (hope) Can I fix the passenger myself do you think? Dealer estimated $900+ to fix both sight unseen - ain't happening. I appreciate your advice!!!