WC, Unfortunately that's not what I am seeing in real world usage
Just search the thread, back when traction was an issue I was having, I raised the rear ball stud height and it went away. On low traction conditions, went go the opposite direction and gained traction.
or as the hudy setup guide mentions which we have done this rodeo once before:
REAR UPPER CAMBER LINK - SHOCKTOWER
EFFECT ON REAR ROLL CENTER
Upper holes • Lower rear roll center
Lower holes • Higher rear roll center
REAR ROLL CENTER CHARACTERISTICS
Higher
• Increases on-power traction
• Use to avoid traction rolling at corner entry
• Use under low-traction conditions
Lower
• Decreases rear traction into corner
• Increases steering into corner
• Use to avoid traction rolling mid-corner and corner exit
But, for anyone reading don't take my word for it, try it yourself. Go 1mm shim under the inner ball stud and whip it around, then add 7mm of shims under the stud. Did you gain traction or was the rear more free? if it was traction rolling, did that stop with more shims?
As for the +8mm mod, after seeing it what it did in loose conditions (gained some traction), the inner ball stud raising you do in conjunction with it seems to give the same effect as well, just raising the inner ball stud alone and probably is why on higher traction conditions you need to raise up the inner ballstud. I'll will ask a buddy of mine who still has his setup to run to give it a try, however, as I didn't want more traction, I wasn't inclined to try it out before getting a setup I like done. However, it was on the list.
As for softer springs ... nope, that would be going backwards as I tried the vehicle with the yellow rears and through any sections with ripples it was too lazy or not as responsive on sharp turns. Yup, I did that, remember was using Kodys setup back in early this year on carpet?
As it goes, I try stuff to have an accurate opinion on it from my perspective ...
RC Shox Center diff, good stuff, who knew?