ho bao mach 28 question can anyone help?
 

I have recently purchased a mach 28 by ho bao, which comes with the hyper 7 buggy by ofna. During the break in process, I managed to crack the impellar? (the part that holds the one way bearing and fits inbetween the crank shaft and the rear pull cover) Now the one way bearing engages but just slips since the impellar is loose because of the crack. I have searched online but cannot manage to find much support for this motor. Does anyone know where to buy parts for the mach 28 besides ofna. My lhs ordered one from ofna, that was three weeks ago and it has still not arrived, not happy with ofna's service.