Going off on a tangent here...you can safely ignore this post. Just wanted to give a shout-out to Fenix Lighting.
My Fenix PD32UE had a problem with the retaining ring getting loose...the first time I secured it OK, but I wasn't paying attention, and I started trying to screw it in the wrong way (you turn counter-clockwise to tighten, which was NOT what I am used to doing). It worked for several months, but the second time it came loose, I couldn't get it secure either way...threads were partially stripped, and wouldn't hold the switch in place properly.
So, I figured I would contact the manufacturer, and see if they could send me a new tailcap. Did a Google search, and Fenix Lighting came up first...I thought they were the manufacturer. Sent them an e-mail explaining the issue, and asked if they could send me the parts. (I figured there was no reason to send out the whole light...after all, the body is just fine.) They got back to me fairly quickly, explained they were a distributor, not the manufacturer, but offered to fix it if I sent them the light (to Denver, Colorado). I explained the issue much as I have here...and they agreed to just send me the tailcap assembly. I had offered to PayPal for the costs of parts and shipping, but I never got any response to that part of my message. Today I checked my mail, and I had a brand new tailcap/switch! Remember, they did not sell me the light...they did not make me ship it to them...AND they sent me the parts for FREE! If they were trying to make a good impression, they certainly succeeded! I'm definitely going to make my next Fenix purchase from them.
Anyway, that is my story. Since technically it was a giveaway of sorts, I figured I'd share it here as well. Fenix Lighting, I salute you!