sun roof issues
 

My sun roof has two issues:
1. During closing the sun roof moves slowly, stops, and starts opening again unless I assist in by pushing the sunroof forward during closing. The motor does not seem to have enough torque to close the sunroof.
2. The leather glued on inside cover on the sunroof has come lose.
Questions:
A. Has anyone experienced the same symptoms and how did you fix it?
B. How do I remove the sun roof so I can re-install the leather?

TIA,
Ola