make sure you run a stainless filtering element only, no paper.
And yes you absolutely want to run a leanout valve, best way to build heat and save fuel. Drill and tap 3/8" NPT into carb spacer or intake under carb and plumb to slide valve on your dash. It's simply a controlled vacuum leak.
Mix 1/2qt of Klotz Uplon to 55gal drum of alky keeps things nice and clean.