i have been reading the lectron manual and heres what it says the low and mid run on there own circuit if it starts and idles than there set the top end comes right off the bottom of the fuel bowl with a fuel line right to the top end power jet its a tapered jet needle the goes from wide open to closed you just turn it in till it stops banging out well i did  went from all the way out to all the way closed  dident really do much change  when i bought this from dennis packard he told me to see if it starts and if it does and it idles than the low end and mid are set  he said to keep turning the power jet in till it clears up or stops banging out and thats it  he told me he set it a little rich so i could tune the top end this way the top end only works from 50% to 3/4 throttle in the manual so im like wtf is going on  and i am running a q pipe everything on the quad is new and done right its all working right but the top end