I've got an RM Pulse M mod that I bought at a local B&M and I love it. I have one problem, though, and need this forum to help. The switch/button is self-adjusting, meaning that it screws in and holds the battery in place while regulating the throw length of the button. It works great with my purple efest 18500s, both flat and button top. When using the flat tops the button simply screws in a little further to compensate for the slightly shorter overall length of the battery. Here is the problem: I just received my AW18490s (flat tops) in the mail and they are too short. The button screws in all the way and I can't depress the button when using these batteries. Anyone else own one of these and have a solution to my (minor) dilemma? Thanks in advance...