After much messing around with carts, I have begun dripping into my 510 atty. Much simpler but taking the cart off and on is a pain (mostly because I drop them alot and inevitably they fall on the nastiest spot on any given floor). So... I have decided to purchase a some drip tips. What I can't seem to find is whether the darned things will fit my mega attys or if I will need to revert back to the regular 510 attys. Anyone use drip tips with 510 megas?