We have tried a couple o-ring gags now and haven’t had much luck. The first one was too small for Kimuratrap to use my mouth while the gag was in as he is above average. The second one was too big for my mouth as I have a small mouth (literally, the dentist even said so - I only have 24 adult teeth because my mouth was too small to have 32). We know he fits in my mouth when my mouth is fully stretched open but would like a gag that can hold my mouth open for him to use. Are there any that would be more customizable size wise? Thanks in advance for any suggestions.