When I shut driver's door. the glass make a tilt sound as it is not tight in place. My mechanic instruct me to replace plastic clip (or clips) to maintain the regulator operational for a longer time. He said the vibration the glass makes when shutting the door is an indication that the regulator will fail soon. Do you agree? or have any nice ideas involving power window maintenance or care. Are third party regulators better than the OEM ones? It seems I am on my way to replace a second regulator out of 4 in less than a week

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X5 3.0i SUV
2005 -113000 miles
GM-A5S 690R Tranny