1st set of lectrons, and these are old style without powerjets. My set up is a stock cylinder, dune ported 4 mil, 65 bore, fmf fatties, cool head with 19cc domes, dual 32mm lectrons with 3-1xl metering rods. Engine seems to run out of fuel top end of 5th and misfires and stutters before I let off (couple seconds). Pulls hard in lower gears. Idles and runs well in midrange. Plugs have only a little color, yellow. Currently running 112 fuel. Any suggestions on what to do?