Not a problem.
Try cleaning your atties with rubbing alcohol (70% or higher). Drop them in and let them soak for 5-10 minutes. Then, take them out, holding them up-right with the open end up. And watch how it drains at the bottom. You're looking for a steady stream. If it's just dripping, submerge it in the alcohol again, pull it up, and let it drain. Do this a few times, and you should start to see a stream.
Wipe it off, tap it out, and put it in front of something that creates airflow - like a fan - to dry. When you can't smell the alcohol in the atty anymore, it's dry. In front of my window fan, this usually takes 1-2 hours.
This is how I've been doing it, and I find it works quite well.
To be honest, while I have tried a 510 that a friend had, I haven't spent a significant amount of time with one. So my perspective on 510's is very limited.
Also, I'm using 901 atties on my Kr8 batts, so it's running at 3.7v whereas the 901 batt runs at 3.3v.
So, the way I'm running it, I think it's pretty comparable to how I remember the 510. I think the flavor comes out a little more - but that may be the voltage I'm using it at. They are a bit leaky though, which is annoying.
But I prefer the flavor of my Kr8 cartos to both the 901 and the 510. It just feels richer and warmer to me. But, my Kr8 cartos also don't put out as much vapor at atties do. It's a trade-off. Over all... I still prefer cartos, though I do like my 901's.
ive tried to clean them with alcohol, ill try again and look for the stream but i dont know if thats the prob, maybe there blown, dont know! i appreciate the help.
i don't use the stuff for myself but other ppl around me like it
boB