Centre diff in a FS

[baw888]

So I was tinkering away with my FS the other day, and it hit me how easy it would be to convert the FS slipper to a centre diff.
You may ask why? Well our local track is 50/50 astro turf and loamy dirt. If the slipper is too loose its great on the dirt and turns well, but looses out on the astro turf trying to clear the jumps. If its tighter then steering and onpower stability starts to suffer on the dirt.
So within a few hours and 8 x 5/32 ceramics balls, the slipper was now a centre diff.
Now it turns on a dime. Doesnt step out when under power out of turns and it very settled in the bumps. Drive on the high grip sections is crazy good.
The next race I ran a a PB by more than .5 sec. So it seems to work.

Has anyone else over the years used a centre diff? I know one of the previous lazers had a centre diff but the FS design ends up without a thrust bearing and this seems to bind the front to rear bias perfectly. The slippers spring adjustment give a great variation in drive.. Id post a photo but it looks like the slipper, just with a white spur instead.

Brad