The problem that im i having is after wot 5th and 6th .When i close the throttle it get zinggy.untill the rpm come down.Ive tried bigger main and bigger piolts .The only thing i havent tried is a different needle.But it seems to pull hard from bottom to top.With the pwk on it was doing it.It used to only do it with the fmf when i had the 38 on it.After i think about it.The fmf was doing it to.Ever since i rebuilt the top end.I got my head shaved.It seems it being do it ever since i had that done.I never had checked the squish on my quad.Im doing it tomorrow anyways i got to get the measurement for Carl ,So he can do his thing to the head im going to be using.I wonder if its way out of spec.It didnt do it before i think about it.Im going to put a video up in a minute or 2 of me running it today.