with the exceptionally fast shipping of my FLM parts from mike, I got my truck up and running a few days ago. Not five minutes after the first run with brand new mip cvds, I sheared one off and had to go home.
Back out with the stock plastic yolks the next day, and this thing just rips around the track! everything was really moist in the corners, and our track is packed clay so it was real thick mud - the 5800 holds up great and has killer torque out of corners. All said and done, the plastic yolks have held up to a whole day of abuse, nothing broken but a shock end popping off.

:D