Turning it up a notch (or two)

[caretaker1]

I've been playing the $20 SNG's fairly successfully (ROI 16-17%) over 900 in. I've checked Aleomagus' confidence program and I'm confident I'm a winning player at this level. However, I've seen other players cite ROI's in the 20-25% neighborhood and I'm curious what I can do to attain that level. I've noticed my ITM% is 40% which seems to be identical as these players, however my results are not flat, but rather skewed towards third place finishes (at a ratio of roughly 100 1sts, 110 2nds, 120 3rds). For those who have attained this higher level, what are likely areas I need work on to level out the finishes and get my ROI to that next level? Thanks in advance.