Hey all... I've got a 2000 ZX9R, with a full D&D exhaust, a K&N air filter, and it was rejetted last winter with a dynojet kit. The jet kit said to install the 150 jets, which I did. It's running rich, so I swapped them for the 155's that also came with the kit. Still rich. It's stumbling until she gets up to almost 3000 rpm. My next step is to put the factory jets back in. I'm sure there are plenty of you out there that have a similar setup to what i'm running, so my question is, "What size jets are you running?" The full exhaust that came off the bike was I believe a Muzzys, and it was a 4 into 1 style. My new D&D is a 4-2-1 style. Thanks in advance!!!