When I opened up my driver's door to fix a grinding squeak on raising/lowering, I found the rear plastic wheel was not lined up well with the channel. The regulator's sheet metal wheel arms is easily bent - a slight tweak and now nice and quiet. Must have been bent slightly out of shape by someone leaning hard on the raised glass with the door open.
Bearmw, I also found the wheels in their channels have a fair bit of side-to-side play, but since the wheels were not badly worn and the channels quite rigid, that play must be by design. I cleaned with WD-40 & greased with Lithium, seems much better.
I use Dynamat in a few places - rear panels and speaker enclosures are pretty well covered - but avoid metal with direct contact to outside. The big sheets of metal door may be a tempting spot to cover, but will likely promote rust, and will be nearly impossible to clean it out without visibly denting the outside face of the door later on.
Bearmw, I also found the wheels in their channels have a fair bit of side-to-side play, but since the wheels were not badly worn and the channels quite rigid, that play must be by design. I cleaned with WD-40 & greased with Lithium, seems much better.
I use Dynamat in a few places - rear panels and speaker enclosures are pretty well covered - but avoid metal with direct contact to outside. The big sheets of metal door may be a tempting spot to cover, but will likely promote rust, and will be nearly impossible to clean it out without visibly denting the outside face of the door later on.
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