I was about to post that left arm offspin and right arm legspin is Gilchrists weaknesses. But now i am not so sure.
Some stats
Career Average 53.94
Legspin and leftarm offspin averages
Bowler Dis bwd c fi c wk st lbw hit Ave A Kumble (LBG) 7 2 4 0 1 0 0 27.71
DL Vettori (SLA) 5 1 4 0 0 0 0 53.80
M Kartik (SLA) 2 0 2 0 0 0 0 14.00
CW Henderson (SLA) 1 0 1 0 0 0 0 7.00
SR Tendulkar (LBG) 1 0 0 0 0 1 0 0.00
Asd you can see, his record against bowlers spinning away to off is less than his career average. Up until the recent test against NZ, Vettori had the wood on him but Gilchrist absolutely hammered him. This was on a wicket that suited spin (Warne got 7 wickets). Now i am not so sure. Maybe Gilchgrist has turned the corner.