After stripping clear coat off the trailer yesterday - absolute breeze with the PPG stripper, decided to put in the new windows. All I can say is one word - DREMEL! My corded Dremel made this job a breeze.
Cleaned up the top rails as had varying amounts of silicone and old plexi from the replacement windows. Once I got 95% of the junk out, took my Dremel with a 1/8 bit and ran it the length of the channel. That accomplished two things - opening the channel ever so slightly for the thicker glass and got the balance of the old junk out. Took several passes and made sure all the residual junk was cleaned out. Did a dry fit, though did not fully put them on the windows. It was easy to tell if they would go on or not.
Once the top rail was ready, put a small bead of RTV silicone the length of the rail and fitted it on the top of the glass and slowly fitted in into the channel. Finished off the fit with a rubber mallet. Made sure the window was on a flexible surface. The VTS windows fit snug and secure. Let the silicone cure.
Reinstalled and let the windows down over the new seals. Installed new stainless clips - had to use just a tiny spot of the RTV silicone to make sure they stay in place.
Now, the big thing. The curve. To the critical eye, the curve is off a TINY bit. The windows seal just fine. The middle of the curve is maybe a fraction of an inch higher than the curve of the trailer. I will post a picture later.
Overall I am very happy with them. The cost was reasonable and the support was just great. I would order these again in a heartbeat, but hope I don't have to!