The sunroof in my 87 n/a is stuck.......one side will pop up and slide a bit. The other side does not pop up and does not slide at all. I've removed the sunroof from the car and have tried spraying MPPL (Maxim Penetrating Lube) down the track to free it up.....doesn't seem to be loosening it up at all. Any ideas? Is there a way to get it taken apart further so that I might be able to get at the track......I am at a loss because i can't get it opened up enough to even understand and/or free what is stuck......