I had the pin retainers on my spec r shafts and it wouldn't even fit snug it would pop off extremely easy...so then I decided to do what I do to all my other dcjs and never had a problem with this method and that's heat shrink where the pins are and have lost 2 already .
I have 4 dcjs on my tf6sp and have ran it hard in mod for over a year !!!never once have I had an issue !
Going through just parts of this thread and have counted numerous people complaining about the yokomo dcjs !!
There's obviously an issue here with many guys running this car and the poor quality of dcjs offered for this ride ...way too many complaints to chalk it up to user error ......this is a quality issue and should be addressed!!