OK, so it took a while, but here're some answers to my questions from a Pelican rep. I asked:
1. What would be a good (safe) way to clean the reflector.
2. Using the incandescent module in the M6 LED body.
3. Fixing the rough threads on the head.
Good Day Miguel: In reply to your questions about the M-6 Flashlight, here are your answers.
You can gently wipe the dust particles from that reflector with a soft cloth or Q-tip will probably work better.
You can put your M-6 incandescent onto your M-6 LED Body it will still work. No difference and yet a slight difference as far as loading that module into the new body's shroud. Give me a call and I'll gladly walk you thru the process if it is not clear.
About the threading being a bit rough. It's just because its new. It will ware in and get smoother with use. No there is no lubricant to speak of for the rough bezel. But the proper and only lubricant you should use on your O-rings is Silicone Grease and only Silicone grease.
I think I have covered all your questions, But if you have more, Please feel free to contact me anytime.
Regards,
Nora Wainwright
Sales Technician
Pelican Products, Inc.
(800)473-5422 ext 342
Her answer to #2 is definitely not clear, but I can't deal with it right now. I know the old style incandescent fits in the LED body (tried it myself). I read elsewhere on the site that to fit the new incandescent assembly you need to remove the reflector and spring, and some discussion about "new" style bodies with/without lamp assembly threads (can't remember the details now). I haven't verified these last two claims myself.