Quote Originally Posted by rsteinmetz70112 View Post
Wouldn't metal tabs be better able to handle the tension?
yup, that's the theory for the metal SBC brackets, but Bulldoggie is correct, the tension/friction on the leading edge of the glass can still be present, so (in my case) I have to still keep the front vertical rubber track well lubricated with pure silicone spray a few times per year. My windows have never jumped the track, tilted or raised up uneven, so that is an additional issue some need to address.

p.s.....are you closer to finding/buying a VX yet, know you've been looking for a while?