1/16 here too, .5 ohms. Flavor is still plentiful at 1/16 frankly, it's just a better vape all around.
Drilling is not hard to do at all, especially the rm2 since the cap is so soft (in fact i drilled my rm2s at my desk at work with just a drillbit i had in my bag and pliers to hold it straight.)
If using a real drill (which is recommended) you just want something to hold the cap straight, if possible a vise but i've used some pliers held with my other hand too.
Then what I do (and please not i'm a total noob with power tools) is place the drillbit straight on the hole, start the drill slowly and ramp up the speed, while pushing a little, steadily. You don't need to push hard, but if you don't it will just spin. On the rm2 it should take maybe 10 secs to clear the hole.