Thanks, Str8stroke. Can you comment on how the Permatex you recommend compares with Nano Oil or DeOxit Red for use on both the LD02/Beta combos and the stock Beta? I ask because I have the latter two on-hand and would rather use them out of convenience, but I'd be willing to go get Permatex if it has properties that the others don't that are desirable in this context. So far (I just got the light yesterday) I have lubed my CuBetaQR with a drop of 5-weight Nano Oil, which has made the threads a little smoother, but there is definitely still room for improvement. Perhaps it will take a bit of time for the threads to wear in or the oil to penetrate, or perhaps this is just the way it is with copper lights (this is my first Copper light so I'm not quite sure what to expect), or perhaps I'm not using the best available lube for this light. Can anyone help me figure this out?