I'm not a noob, by any means, but new here... so I guess I'd better get my 3 posts in, eh? Last analog was on 5 May 2010. Currently, I'm using a Precise P10 and some homebuilt mods (lost my Indulgence in New Orleans on 4th of July weekend, AARGH!); just gave away the last of my old 510 stuff to one of my sisters, except for an old passthrough that I've picked up again while I replace all the batteries I lost.
I switched to those LR cartos last summer, but you should be getting better results with regular atomizers. Maybe try varying your drawing style? Try slowing it down a little?