i also lung hit and my RM2s are 3/32 size big.......ive actually thought about going a little bigger but waiting for another RM2 to come in the mail first........but even mouth hitting with an air hole that big makes some decent clouds too......my neighbor came over last night and was mouth hitting a grand i had laying around and he was getting alot of clouds off that RM2
It also depends on the resistance of your coil as well .8 ohm with 3/32 would produce better clouds than a .8 with the stock hole
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