I have the 3.3 and about 1 1/2 gal through it and now it is difficult to keep started/idle. I have tried to tune it with the high/low speed needles and idle screw but it will not stay running unless I am giving it gas all the time. I have even tried to turn the controller trim settings and nothing seems to work. It runs like a bat out of **** but when I slow for a turn or to stop it stalls/dies out.
I have tried multiple new glow plugs nothing seems to work, and the fule is fresh, temp is right, HMMMMM..................