Do yourself a favor and stop obsessing.
Yes, weight does make a difference but, as I said, this isn't a precision scientific thing.
You're approaching this as if you were programming a guided missile. Instead, think about how artillery is aimed. They estimate the range to target, aim accordingly and fire a few rounds. A spotter reports whether they're on target or how far off and they make an adjustment then fire for effect.
You've already confirmed that 32 works better for you than 30, so it's time to just ride the bike.
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Chain-L site
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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