Compatible slipper clutch for a Team C Racing TC02CST stadium truck

[Chickenpuff]

Hey,

So I picked up this Team C Racing TC02CST stadium truck rolling chassis. It's complete with the exception of a spur gear and slipper clutch. The style looks very similar to an RC10B6 slipper, where the top shaft has two opposing sides flattened. But, as I recently found out, the B6 slipper's hole is slightly smaller than the shaft on the TC02CST (about 1mm). Does anyone know of an available slipper that would (likely) fit? Worst case scenario, I'll buy a B6 slipper and file it to the size I need, but I'd rather not. I haven't taken the TC02CST tranny apart to see if the B6 top shaft would fit, but that is likely 'Plan C'.

I'm open to other thoughts or ideas and I can post some pictures of the TC02CST top shaft and B6 slipper if that helps.

Thanks in advance.

Cheers.