There are some tuning guides in the stickies. It's all in there. Tune the dwell, PSI, and back cap, and you can even run a stock axe as low as 140psi (did it last week-end) and very efficient. There are also some threads on poppit polishing. I haven't done this, but if you want to go nuts, this will make the marker even more efficient.
Axe-Olive/Eigenbolt/CP Advantage/Eigenbarrel/7th Element OLED
Mini-Gloss Black/Eigenbolt/Violent Trigger
New England Lobsters