I don't know how many others, but at my track, I won both the mod buggy A and mod stadium truck A this week and I run B44 A hubs with shaved brace. Zero washers on my buggy, and -1 washers on my truck (-1 meaning I run one LESS than a shaved brace because I run dubro HD ends that lower it even more).

Seriously. I can't emphasize how much our track favors a high rear roll center at the moment. We have banked sweepers for all high speed corners so we can crank that RC up there to get corner exit speed while keeping held in the banks to keep the rear end hooked. The in fiend is mainly turn and punch, so it helps there too. I'll probably have to go back to a lower RC when the track layout changes.