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Don't be. my opinion might be negative but I've got no proof either, just an opinion. The simple fact that someone found a couple foot pounds by grooving suggests that if someone actually spent some R&D time on them there might be an optimal groove (size, orientation) that actually adds MORE than a couple pounds and may even allow higher compression and timing advance without detonation, which could amount to a whole lot more than just a couple foot pounds.
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