How do you hold your slipperential while tuning it.

[kalbien]

Hi

I've been experimenting with slipperential and everytime I want to loosen/tighten it I am missing one arm.. or two actually. Do you have any trick how to hold everything to be able to tune it, while using just one hands? usually I just ask somebody to hold driveshafts for me so not a big problem, but if you have any trick how to make it easier, most appreciated.