hi Neil,

I took out the whole power window assembly recently for repair..if you take
them out, consider open up the motor to clean and lube it.

The bottom of the raiser has a plastic guide attached to the metal vertical
rail via a plastic pin. You may want to replace that plastic pin with small
screw and bolt. The pin on mine was broken and the cable jumped off the
track.. Time to remove, repair, clean, lube and reassembly is about 4
hours.... yeah I am slow :-)