32-34 degrees total advance at 3000-3500 rpm is fine. Your overheating seems to be a radiator problem. You are sure it's running warm, not a inaccurate gauge?The pumps Patrick's uses generally have the sheetmetal impeller as the cast iron ones are not all that common for rebuilding.
235's have a poor combustion chamber design, they require richer jetting than other engines of similar power output.The Holley-Webers with factory jetting should be close enough for high speed running.Does the engine respond normally when accelerating, no hesitation "soft spots"?
