HI GUYS, ON MINE IV USED THREE TYPES OF FUEL CONTEST 10 NO CASTOR TECHPOWER 10 NO CASTOR AND GX5 WITH CASTER STILL NO GOOD,THERES NO FOAMING IV CHECKED,I THOURGHT IT MIGHT BE RUNING HOT SO I TOOK THE COWL OFF TO SEE IF IT WOOD MAKE A DIFFERENCE BUT IT DIDDENT,SOMEBODY TOLD ME TO USE AN ENYA 3 PLUG TO MAKE THE ENGINE RUN COOLER I HAVENT TRYED THIS YET BUT I WILL PRESSURE FROM THE TANK IS FINE,AND ITS NOT LEAN? DONT NO WHAT IT IS, HAPPY DAYS