take everything completely apart, top cap & pins, bottom switch housing & spring and clean with "Nevr-Dull", then go over the tube threads and the outside of tube with the same.....then go back over everything with an ISO soaked rag & toothbrush on all the threads........double check & make sure contacts are clean if anything is seen then hit them with a pencil eraser, then go over the contact area's of the battery with the eraser....re-assemble and vape...works for me.
were practically neighbors!
after 6 months of using various copper mods and a Brass Surfrider i think yours is the best and quickest method i have used. picked up a tin of Never-Dull today at the auto parts store. i was using ketchup and an alcohol wipe but this is 10X easier and the results and preformance are stunning. works as well on the brass as the copper and looks to be several years worth in a container. thanx