So irrespective of whether anyone thinks our effort in trying to convince you not to sell it was unfounded, I'm glad you have decided to keep it for the time being.
My thoughts are that you are disillusioned with the device because you are playing it through a cabinet and not an FRFR system, as I have seen other users complain when they have just bought the device. You should definitely give it a shot through a PA system sometime, the routing options on the Kemper and you'll probably get better sound FOH than with the cabinet.
As far as the cabinet, I'm not sure what speakers it uses, its characteristics, etc. But experience tells me that if you're experiencing clipping and undue colouration, it is just not a good match for the Kemper. I'll reiterate my suggestion that you create a DI profile of your amp (as well as one with a merged cabinet) once 3.0 comes out and you'll be surprised at the accuracy with your cabinet.
But I'll warn that YMMV with the factory profiles, which imo are really good. It's just that cabinet which is limiting your experience and I mean that in the best possible way as a possible solution to your Kemper worries.