Good question, I tried it in fact. It kinda backfired on me, spit some nasty hot oil into my mouth in fact. I did get some good vapor but it ended up leaking quickly. I drained it back out and put it in a 2.4 and suffered through. It stalled out part way into the second gram so I fed the rest of it to my Revolution. Tasty SD oil but lots of extra junk in it I guess.
I've had some lower grade oils that worked great and had a couple of 'can't miss' $50 grams recommended by bud tenders crash and burn. One 'taffy' fouled two carts in a few tenths (I couldn't believe it so I wrecked another cart....). Price is no real indication. Light color, firmer nature and (most of all) clean evaporation seem to be the best clues. I've also found high percentage THC concentrates work better (I assume because there's less 'other stuff' in there?).
Any one you want. They're standard size "drip tips" in the trade. However, Omicron carts come with some very nice soft ones that work very well. I think most of us use them?
OF
Has this happened to you lately?
I think the 1701's are almost done and should fix all issues with the current design.