I found 8.5mm on the slipper to be too tight, so backed it off pretty much straight away, didn't have any problems with the pins for 8 months or so, but recently, it seems to have caught "oOple pin Death", not sure if it's breaking the pins, or if they are just escaping, I tend to end up with driveshaft, axle, bushing and 2 grub screws, but no pin
