I eventually got the glass to slide down a tiny bit. Enough to get my thumb nail in to assist with it. It had been a really long time since I used this one. The coil was exceptionally gunked up. On my other one I had Dremeled out the smallest air disc to 3.5 mm, this one didn't even have one installed. I thought that I had lost it but no it's the bag. I will try the one with four 1.5 mm holes.