I have used several to many daytona carburetors over the years,maybe 10 or so on various 6 cylinder vehicles and even forklifts, and have not had any issues with them. I would like to know any specific issues to look out for. The only thing I have noticed is that they don't seem to need a lot of choking when starting most times, maybe they are set kind of "fat" to start off with. I have actually met and talked to Ron at Daytona and he is a wealth of knowledge about carbs & fuel systems, and doesn't mind sharing his knowledge.