Should I shave down R3 XL?
The depth of the R3 XL seems too much for me. These 2 parts of the R3 XL are digging into my mouth, I can barely wear it for 30 seconds due to the pain. The R2 L fits great though, but the depth seems too shallow for me and I was hoping to get a bigger stretch from the bigger width of the R3 XL. Was wondering if I should shave down the corners of the R3 XL so it can fit.