overheating.. looking for suggestions

[kevinshea]

Few more adders...

I've had the car running for 23 years without stats and it always ran well..
yup, Only fill to the top of the fins
Have purchased 180s and will add in to see if any different.
Changed out the radiator cap gasket.
Way back when, I added a 2-3lb pressure valve on the overflow line and fed that into a "puke" tank behind the baffle plate. I can remove as appropriate and let it run at atmosphere.