The good thing is that once I get the timing on the BB, I shouldn't have to mess with this silly clamp screw for a long time, as the octane selector appears to have a decent amount of play for small adjustments.
You'd think the octane selector would be called something more true to its usage, like "timing trim" or "minor timing adjuster". When you start talking about "octane" I think it just confuses things, especially since fuel octane is just one reason why you might need to adjust the timing.
