@SteveV Thanks. I presumed you'd be using your spare gate when you said you'd broke your glass too. I was just cleaning the tank out ready to try out the higher coil position. Put some VG on the oring and slid the glass on, mounted fine. For some reason I decided to give it a twist, even though it was on and that caused it to crack. That reminds me, some reviewers were complaining of the glass spinning with an assembled tank, mine never had that. If it did I wouldn't have broke my glass aha.