Yes CLR feeding house PA is that wrong or causing me to have too much highs at high volumes ?
Not wrong because the CLR is probably not messing with the signal, but if the CLR doesn't have the same frequency response as the FOH then it'll be misleading. You could EQ for the CLR which will send that EQd feed to FOH and, unless you have an engineer on that mixer who knows you're doing that things could get wonky for the audience.
A symptom of the
Fletcher-Munson effect when we EQ at low volume and play at high, is that the highs and lows get over accented so I always have that in my head when I set up a preset, then I adjust and save it during sound check and leave it alone from then on. Unless I start playing with Dyna-Cabs when I get home…
A while back I set up my FM9 sending the left channel to my EV and the right to FOH, then had to reEQ the EV send to cut some highs, and was stuck because I was using the global PEQ which affected both. DOH! Now I use separate OUT feeds so I can EQ them separately, though by default my FOH is flat so the engineer can do what he wants with it, and I just make a recommendation that it be 12 dB cut at about 100Hz and 5K-6KHz which seems to work pretty well.
There are so many ways to EQ the OUTs on the modelers they're their own form of option paralysis.
Regarding the flubbiness, have you adjusted the master volume in the Amp block? It can make an amp sound real flubby when pushed too high. Also, the Input EQ page of the Amp can help by changing the guitar's signal into the amp. And, I've found I tend to use too much gain initially, then at stage volume the (Fender Blackface-based) amp sounds too fat/flubby and it clears up when I reduce the gain.