Ran them this summer, both props are new and 24P. 270 w/496-425hp and from 20-40 gal fuel and up to 3 in boat. Would run 66-67(4700-4800) but feel injectors need cleaned because I have a friend with same year, model, prop, load, hp runs .5K. Both props perform/feel overall just the same at all rpm/speeds. My question wonder if "lab service" would be worth the $$$ investment?

thx