Hope you were successful in your regulator replacement...got my regulator yesterday afternoon, but layed around most of the evening.
About 10:30PM, my wife came to get me to go to bed, and I suddenly remembered that I had to reinstall the new regulator. So instead, I told her good night, and went into the garage (with another beer in hand) to finish the job. Took my time, so I got finished and cleaned up by 11:30PM.
I did notice that the new assembly has a different track housing than the old stock unit...perhaps the manufacturer knew about the problem?
2009 ML350 (84K) - Family vehicle
2001 CLK430 Cabriolet (71K) - Wife's car
2005 BMW 645CI (124K) - My daily driver
2012 Mustang V6 (60K) - Daughter's car