Re: f60tlrc carbs
Idle and midrange passages in a four-stroke carb are small and easily varnished/gummed up. Before I bought different carbs of questionable condition and application, I would spend a few bucks on rebuild kits and try to fix what you have. I don't believe your mechanic. I would also suggest you install a water separating fuel filter if you don't have one. Again, not a budget buster.