Gets hot and stalls out

I run mine at from 205>207 by IR gun, on purpose, with a Carter engine-mounted, HO mechanical pump; and a one piece fuel-line from pump to carb, the filter being at the back. It has no percolation issues.
I did have hot-running issues in the beginning, which I traced to too-tight Ring-gaps. The .0065 per inch rule did not work in my 367, with KB107s. I opened them up to .0080 and Badaboom, problem solved.