Seems like your atty isn't getting enough juice. Check the cartridge mods forum for some ideas.
Personally, with all those mods, what really works best for me is simply pulling out the filler, and snipping off about a 1/4 inch of it. Fill tank, stuff in that 1/4 inch filler, add a couple drops and I'm good for awhile. All the other elaborate stuff seems overkill.