A couple things to consider, Float level, carb vent line location. Check your
Egt gauge and sender. Do you have an oil cooler? Do you have a heater installed?
Make sure you not more than 50/50 on you antifreeze mix. Do you have a thermostat installed.
Drain your cooling system and refill using a vacuum refill system. Very important if you have a heater and thermostat.
I have a speedster with an early 912. I’m at 160 on the mains but I also have the zipper big bore kit.