prima rake on heads up

[greatwhite]

I played heads up for about 2 hours last night at .50-1 against a total donk on Pokertime. However, I seemed to be running very end near the end of the session and ended down $30 or 30 bbs. However, at the end of this session he was down $115 or 115 bbs. I have not noticed the rake being this high before. It took 145 bbs in 2 hours. Is it possible to overcome this?