I just ordered an L2 setup(host and drop in assembled), and wanted to go ahead and pick up some basic mod parts like gitd o rings, tail cap button, maybe a spare bezel. I just want to add a little personal touch to it without turning it into a $500 lightsaber. Problem is, I have no idea what size o rings or anything else to order. The solarforce sales sight doesn't give much info and I've googled my fingers off and come up with nothing. If some of you flashaholics could chime in and learn a newb, I'd appreciate it.