It wasn't season nine they changed it from 6 to 7, though. TAR10 needed a 7 maximum since there were 13 RoadBlocks (due to the first leg getting one when it previously had not had one), but teams were always functioning on a six-RoadBlock maximum until TAR15 at least. TAR16's the first to have someone reach seven RoadBlocks without it being forced, though I suspect the rule change in the first place was only to accommodate the two-RoadBlock leg in Shanghai -- without that twist, we'd probably still be at six each.