[sammyg2]

Yup, something is seriously wrong. Under those conditions my SC never gets off the white mark.
Either the oil isn't flowing as it should, or it is getting too hot in the first place. Is your engine running extra lean?
I think I'd pull a spark plug or two and see what they look like, if its running lean that would make it run hotter.
A useaful tool is an infra-red temperature gun. You could map out the temperatures to make sure you have a temperature drop across the lines to the trombone cooler.