Brozz exhaust and tuning failure

[Spins]

Well my Mikuni clone arrived yesterday. I left the 40 pilot jet and installed a 115 main. Turned the mixture screw out 1 3/4 turns . I left the needle clip in the center. In stalled the carb. With a Brozz you have to remove the rubber coupling attached to motor unlike the stock carb. The frame is in the way. See pic.

I install a free flowing exhaust and removed the snorkel on the airbox. Bike started easily and I adjusted the idle down to 1500 rpms once it was warm.
I tooled around slowing. Bike feel better but obnoxiously loud under power. Cruising around 35 indicated in 5th gear had a nice mellow exhaust note.

Everything seem ok so I took her on a full out run. Bike pulled better I saw 7500 rpms in 5th. But my emissions delete plug shot off and she became really loud . I limped home and saw the exhaust had changed colors and my rear reflector paid the price of my WOT run.

Well, I hate the exhaust. The stock unit is going back on. I’ll put it up for sale if anyone’s interested. $50 shipped.

Could use some help for tuning the new carb in stock form. Will the 40 pilot and 110 main be a good starting point? Florida here around 60-75 ft above sea level.
Should I leave the snorkel out?