hmm, I'll try and be a bit more helpful than Fiend. It sounds like you are going about it the right way. The crucial thing that I found, was when you reached the shallow mono with your right, was to try fully straighten and stand up on your right leg. As soon as you do so, you find yourself in balance. This may sound a bit obvious, but actually straightening your right leg can feel very insecure and this coupled with the height of the problem is perhaps what puts people off committing 100% to the move.
I have to agree with Fiend, it does feel easier than Font 7a, but saying that I know of a fair few people who climb harder than 7a and struggle on it. How hard it feels, probably comes down to how much it suits you I suppose, like a lot of boulder problems.