Actually that's the most noteworthy aspect of your mod. A good modder will try to improve his build by addressing shortcomings and making improvements.... Pay no attention to the rubber ring reservoir I superglued onto the top of the mod. It is ugly, but I am paranoid about liquid leaking into one of the battery failure vents in the battery box.
I had forgotten all about this thread! I've since made good use of the search feature and my local library. I'll be ordering a 5v kit tomorrow (I know you said 3.7, but I already have one of those)