I recently acquired in HPI Blitz in a trade. The only reason I wanted is because it had a Tekin 1:8 Redline and Hobbywing Xerun 150a esc... The issue is the plastic Spur obviously strips out... so I was wondering is there a metal slipper unit that works with this vehicle. I know Robinson Racing used to make the Gen3 Slipper units, but no longer do... is the another part # that will work? Any help would be much appreciated!