Squeaking topper

Just got a LEER 100xr installed a week or two ago. Had the rear sliders in both the cab and topper open last night and I heard some nasty squeaking as I was driving down the road. When I close the sliders I can't hear it at all, so it's pretty clear it's a topper issue. Anyone have any suggestions? I gotta check the bolts on the clamps, but I imagine they're good since it was just installed.

Just wondering if anyone else ran into this issue and what you can do to fix it...

 

Sorry to raise this thread from the dead, but I'm having the same issue on my 100XR I just had installed on my Tundra. It's definitely coming from the rear glass/door on mine. Did you ever get the squeaking fixed?

 

Did you ever open the back window before you had the shell? I can hear my leafs squeaking a lot more when I open the windows up.