JP
I you are seeing cyl temps north of 450 please don’t “fly the hell out it” until you have addressed hi temp issues.
lots if discussion on this issue in the past, quick summary:
1) check that engine is operating correctly,
no intake leaks, timing is correct etc.
check accuracy of your probes
2) baffling, often overlooked but critical.
place a light source by firewall and look thru cowl inlets, (in a dark hangar helps)
you should see NO light, little leaks add up.
I recently replaced poor fitting felt baffling with well fitting silicone material
and dropped #3 CHT 30 deg at cruise.
3) carb, mixture leaning authority - at least 150 deg EGT sea level at 2300 rpm, more if you are in really cold country.
theres no “160 hp” carb, just a 150 carb that may not be delivering enough fuel. (Hope your mechanic is not the same guy that missed the leaves between your cylinders during pre-buy
)
Other things that that can help - sea plane lip, bigger cowl doors etc.. lots of work for minimal return.
hope these and previous suggestions help, good luck.