I had a couple of issues with my 9e which prevented me from running it regularly. The first problem was that the pinion kept slipping off. I didn't use the oem pinion with 2 grub screw holes but a regular one with 1 hole to hold the grub screw only. As the pinion warmed up, it would start to slip out due to the orientation of the motor. Blue Loctite did not help at all. However, my lhs suggested for me to coat the shaft with some green loctite. This did the trick.
Second problem was that the end bell of my Medusa popped off. Instead of sending the motor back, I decided to use from epoxy to glue the thing back together. This seemed to hold for now.
Anyway, with the 2 problems resolved. Ran a race over the weekend. Nice handling & super fast & nimble. Qualified 5th or 6th out of about 19 racers. I chose not run the main as it was a 1 hr race. Instead I ran my nitro which qualified 1 place below my electric. I'm the solo electric in my neck of the woods. Finished 4th overall in the end.
Regards,
Joe Ling
PS : Here are some older pics :