Thanks again for the tips. I cut the glass out without damaging it (what a relief, this was a new OE acoustic shield), triangle notched my nozzle to about 0.3" base x 0.6" high, and decked the glass so that it sits 2-3mm below the roof line now. I used a BMW glass decking template I found online that I printed to scale on card stock to measure how far the glass was set below the roof line. I had to push a lot harder on the glass than I expected to get it to deck down. Not used to working on such a big vehicle w/ more limited reach. Good to go now. -Steve