Navigator, I just got another BVC out of the pack and tried it with my black and my white Subtanks (am using the silver with the BVC right now) and dry fitted without the glass on so I could get a good look. You are corrent in that it DOES NOT sit on the silicone inserted ring but the surrounding metal! So I can only guess that the BVC's you're using are longer than mine.![]()
I'll try fiddling around a bit more. If the chimney were to insert into the hole, everything would be just great. So, maybe I'll give another coil a shot to see.