Walking beams for stock suspension

[trewq]

I'd like to ask you what kind of prop shaft are you using with your walking beams.
The reason I'm after this info is due to constant problems I've had with stock dog bone shaft and even short Hercules hobby shaft that are constantly popping out.
That said, I forgot to mention that I have raised my Scania R620 by ~10mm.
I think that walking beam approach will greatly reduce this issue, am going in correct direction?