I may have missed it, but what is the benefit of swapping to hexes on the B4.1? I've not had a single issue with stripping a wheel (just pay attention when they go on) and on the front the inline axles (with the screw instead of the nut) do just fine.
On another note...
A little while back I posted about trying to get my buggy to handle a rhythm section better without giving up anything else and I found a solution. It was suggested that I check for air in the shocks, and sure enough - my LR shock had air in it. I bled all of the shocks again for good measure (didn't change fluid) and it is working much better now. Thanks for the help, guys!