Fitting a Slipper to Ultima ST, Some Advice Needed...

[Elkcycles]

I'm looking to fit a slipper to an Ultima ST. I'd like to get rid of the proprietary gear. Neither slippers nor gears are common to come by these days. Does anyone know of a slipped that uses a metric pin drive? T*****s is hex drive, B/T4 is slotted, Kyosho RB uses a flat in the shaft. What pressure plates can still be found that accept a pin?

[Elkcycles]

Looks like B3 is a pin (but SAE). B6 may work. I'lll have to dig through my son's race spares box.

[juicedcoupe]

Different Traxxas vehicles used different kinds of input shafts. I think that there was hex, pin, and DD.

[RC10th]

Know anyone with a modern tra**as 2wd? The newer ones use pin drive but have a stoopid offset gear. Drag race concepts make a pin drive slipper eliminator that uses standard gears.