I tried the pini pins and staggers on my b44.3.
On carpet it drastically lost steering as the rear held too much as I have it more so the back slips a little, I changed to mini spikes and it slipped more, I bounced it off the walls more times than I cared for, glad I had rpm wishbones on

I disconnected the stiffer anti roll bar and it ran great with mini spikes and staggered on.
I didn't do much else but the mini pin 2 are really grippy on carpet on my 4wd and I didn't alter much to compensate it that night so still need to play with it more.
Might be better with mini pins on the front as well ?
Love the new wide staggered though