Don't use T-Cut!! It's far too abrasive, contact the supplier of your 2K they should be able to supply you with proper rubbing compound, they can also tell you which grade to use. Incidentally, are you using a straight gloss or base coat and laquer? ALWAYS go for a base coat and laquer, you'll get a better deep shine and also if you screw the laquering up you can rub back the laquer as long as you dont break through to the paint. Also, always try to test an area on something other than your car first.
HTH
