I haven't shot any of the CSS stuff myself but a friend is one of their shooters so I know a bit about the bow. It may not be hitting on all cylinders.

I'd double and triple check the timing and rotation of the cams. You'll lose a lot of performance in the efeciency department and still put it where you want it relatively easily. Not always a no brainer to tell if it's out is my point.

Second, I'd take a longahrd look at the string. An older one that's still the stock factory model can be upgraded and this can add a bit more punch as well.

Is this a 70# bow?