It's the difference between the company line, and reality. Each component maker claims that their stuff works best (or only) if you use the specific chain they provide. But chains are maybe the last standardized part left, much to maker's frustration, and you can mix freely as long is the width is correct.
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An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
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