mgessell

i have a 640 barracuda runs great ,takes a lot to plane it ,then it runs great was told to check the impellar...no chips looks great but it hass an 1/8 - 1/16 air gap between the blades and the wear ring. would this cause the problem i also have a 9996 montego checked the imp. on that one and it fits tight so i assume thats the problem. but they are different style props so i thought i would ask . i dont know much about jet drives

thanks in advance mike