Got my Flux on the town mini 510 kit today. Never had to syringe fill before so that was new to me. Unfortunately I have been having my teeth pulled to get dentures and the narcotic pain killers do not mix so well with my IBS meds. I for some unknown reason didn't notice the tiny holes on the rubber thing about the ceramic cup. In my haze I decided to remove both the top ring and the one above the cup so I could drip fill it. STUPID!!! I being medicated chiped the cup on one and cracked it on the second fluxomiser. I gotta say that these things must be pretty good because despite damaging the white cup they put out a ton of vapor. The plus side is while starting to pull the ring above the cup on the second one (still cracked it before noticing it) I noticed the hole in it and then filled via syringe. I ordered another kit tonight after falling in love with this one. I now know how to fill one lol. I blame this purely on the pain killers!