Just my opinion but where you are at now is just about right for the RM2 with the stock intake. By opening it up or going with an AFC atty such as the Cyclone or others will open up the possibility's for more exotic builds. Any lower ohms and the vape can get quite warm using the stock RM2.
Here's a little trick for flushing the tube in between flavors using vodka or water but with a liquid such as Sure Bert that has been in the bottle for a while it is sometimes necessary to give the bottle and tube a more aggressive soak in Everclear or isopropyl to get rid of the residual flavors.

Here's a little trick for flushing the tube in between flavors using vodka or water but with a liquid such as Sure Bert that has been in the bottle for a while it is sometimes necessary to give the bottle and tube a more aggressive soak in Everclear or isopropyl to get rid of the residual flavors.
