Economical replacement rocker arm set?

WSUTARD said

Do you see any reason why the wear on the rockers, rods or shaft would cause the ticking?

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I can tell you I have seen guys who are using used stuff and mixing parts get into issues with ticking. The problem is they have too much clearance between the rockers and they move back and forth and make a sound like a lifter ticking. Shimming the rockers and centering the rocker over the valve stem can help.