Yes mine is popping abit and im not sure why(prolly runnin abit rich) and to be honest Im gona wait a while until I get my baffles done before I start fecking around with it, I got a friend that works in a bikeshop so Im gona have him do a Dyna test so I get the jets right, I just changed to 45/130 the same day I bought it couse thats what I had laying around..hehe.