On the last run of a P class boat, the two grub screws fell out of the collet and it must have spun around the 5mm motor shaft until it jammed onto the shaft. I didn't notice it until post-race maintenance. I was able to pry it off with a screwdriver blade (have no gear puller). There were a couple of burrs on the shaft that I dressed with a small file. However, neither that TFL collet nor any other new TFL, Aeromarine or Octura collets will fit. Can't even get them started. It's like the motor shaft got swollen from the friction and heat.
Anybody know about this?
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