Just dropping an update. I opened up the RM2 a bit, looks to be about 1/16" but not exactly sure, used a diamond tip burr on the dremel so I could open it upward so the hole didn't get too low. This is a little flavor beast! Running an old school micro coil, 1.5mm 8 wrap 26g k at just over 0.8 ohm. It's not quite the dense cloud of the RM8, it's a smaller cloud but an even more concentrated flavor. I can see this being my go to for lighter flavored juice, and the RM8 for the more in your face flavors. Oldie but goodie.