jetting fcr 39mm

[400exbirdy]

hey everyone

well,i have probs with my fcr 39mm carb :(, bought it last year and for the price, i must say i'm a bit dissapointed. My jetting is perfect but my problems are: when i do a fast start like a 0-50,the quad bogs down for a half sec and then the power comes. Same when i let go the gas ex:from 3/4 to 1/2 it will bog enough for the quad nose to come down. So ,is it my pilot jet thats to big? my slow jet? or just my fuel/air screw that isn't ajusted well?
if you have questions,then tell me

thanks for the reply.

[rummerd]

a lot depends on what engine mods are done to your quad. So far, I am not too impressed with the FCR 39 on my 440 EX. I have a 38mm Lectron on my 426 and it rocks, starts, idles, runs great. The FCR just wont work on the idle circuit for me. I have a 172 main and a 52 pilot. Bike runs really good, but I would buy another Lectron at this point if I had the money. Maybe once I get it completely dialed in, but I have already spent a good amount of time with it. Called C&D, Cody was a big help.