Nice work! Good god those carbs were dirty...
As for the high speed bog, you may be running into an issue with the carb vent hose, which needs to be open but tucked away somewhere the wind doesn't hit it. If you have the stock earboxes there's a small spot for it in the right airbox, if you removed the stock airbox then tuck it above the top frame rail so it's shielded from the wind by the tank. That might help with high speed bogging
Thanks for the tip. I put a filter on the carb vents and it is in the frame rails up front. It should be shielded from the wind, but I'll double check it tonight when I get home.
I do know I will need to synchronize the carbs. Still lots to learn and do.