I am resurrecting an insanely old post, I know. I am having this same issue. Both my motors work fine but it’s the rubber/plastic latch that is shot. Can’t open the passenger side currently (it’s duct taped down)The motor works fine - it is actually the hinge/latch on the back side of the window that is broken. When you open the vent/window you can pull the window out to about 8 to 10 inches away from the frame of the truck. I'll have to have Will call Menlove for me and see how much the new latch is and if I can order just the latch. (i need to get into Wasatch and formally be introduced to Brad so I can get the WC discount without bugging everyone elese.) The molding on the latch looks like a separate peice - so hopefully i can take it off without pulling the entire rear trim.
Darren told me about it when I bought it - apparently it broke when they were in Baja - Darren said he wouldn't recomend driving hard off road with the vents/windows open - that is how it snapped.
With that said. Did you find a place to source this little plastic hinge at the front? I’m at a loss here. Thanks.