RacerX #99 Roger try Greg D at 803 730 7574 He makes polymer gears for nascar that are stronger that steel. I have one going in motor 2 that I am going to try. 3 notes what is the camshaft end play in your motor? Do you have a roller plate on the front of the cam to keep it from moving? Oiling for the gears, do you have a groove or supply line the sprays
oil where the 2 gears meet? At low rpm there in no or little
oil going to these parts causing gear wear out. You might want to look into changing this on your motor and this would cut back on gears. Rick Lake