I am not so sure its the gears.
With Cloyes they offer a "Z" series chain. The best on earth, but only in std. The .005 and .010 short sets get the IWIS chain. A good chain, just not as good as a" Z" chain.
Rollermaster BTW uses IWIS on all of their sets but do not offer a "Z" chain. The short Cloyes chains are IWIS, a step down from the "Z" chain. I called up Cloyes myself about this issue.
So, if it was the gears you could buy a Cloyes .005 short timing set with the "Z" chain. But you can not.
So it must be the chain, not the gears.
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