[DeuceSeven]

First, you don't have a significant sample to get a handle on what your true roi is. Second you might have some leaks, I would suggest going to the STT Forum and look at the FAQ, check out the ICM software. At the 5.50s 35% is attainable by the very best, in general if you are +10% you're doing very well.

Instead of worrying about your roi, I would look into getting some software such as sngwiz, sngpt, pokertracker, pahud, then go through hands and evaluate if you made +EV pushes and calls. I would also post some hands in the STT forum. If you do these things, I guarantee you will improve your bankroll.


EDIT: I would also suggest reading through the STT FAQ, it might take you a week but there's alot of good stuff in there.