The sunroof on my 1998 E320 stopped working. I removed the glass, and found the sunroof tracks that the glass attach to binding. I removed the tracks and lubricated the arm assemblies that move forward and back into the roof with liquid white grease (LPS2) The arms began to move forward and back smoothly. I replaced the tracks that the glass attach to, and again ran assembly forward and back. No problem. I replaced the glass and I am still having problems. It seems that there might still be binding, and the motor seems to be overloaded. Any help would be appreciated.

Thanks