What size air hole does everyone prefer? I just drilled out my RSST to 7/64ths last night and Ermahgerd! Turned what was a decently performing rba into an industrial smoke stack. Would have like to have tried a 5/64ths but that bit was broken. For those of you who have drilled out your air holes or have adjustable, what are you using? What is the average? Not a serious question, just a curiosity of mine. Pics would be nice.