Hello all, I need some guidance from the sports and action guys if you may. I am mostly a landscape and still life photographer but dabble in action shots at my nephews adult league hockey games, Local indoor bike/skate park, and most important (and of coarse the one I need help with) my 14 year old daughter's cheer competitions. The lighting at the hockey and indoor park is great and I like the quality of my shots there, It's the cheer that's throwing me off. Some of the venues are well lite and I get great pics but the ones with dim lighting and or dark backdrops are killing me. I shoot with a Canon 1Ds MK III and a 70-200mm f/2.8L IS USM. When I shoot the hockey, indoor park, and well lite cheer comps, my settings that work well are: AV mode if lighting is inconsistent and M if it is consistent, ISO 1600, f/2.8 In AI servo and high speed continuous. I mostly use the high speed continuous mode to double tap at the cheer comps due to the professionals there with the strobes. I figure the chances of not being blown out by a strobe are better if I double tap, otherwise I am not a spray and pray kind of guy. I get high enough shutter speeds at those setting to freeze the action and at ISO 1600 noise is easily controlled. My problem is the settings at the low light venues and the low, noisy quality images I'm getting. The low light venues are pretty consistently light so I shoot in M at 1/250, ISO 3200, f/2.8 in AI servo and high speed continuous. These shots are usually under exposed by about 1 stop and very noisy. I tried 1/125 but couldn't get the action frozen well. What am I doing wrong? Should I not shoot in AI servo and try to time the shots better? I do find that AI servo helps if I'm just following my daughter and no one else because I stay locked on her but it does seem to be a bit of a hindrance if I try to move around in the group.