Hand selection once your ITM

Over the last 200 sng's my ITM has been very good but my ROI is not what I would expect for the amount of times I make the final 3. In going over my data I have found that I get 3rd place more than I think is acceptable. I took a look at all my hand histories for 3rd place finishes and found that I have been a little to willing to take coin flips with middle pocket pairs. My thinking is that against over cards I am a %55 to %45 favorite and over the long run this should add up. Is this incorrect thinking? I think pushing with MPP is acceptable but should I not call with them? It is something I am concerned about however it is possible that this is way to small of a sample to get all hot and sweaty over. Any help appreciated.