Component RPM limits

Yes I realise that you're only bringing in a lot of advance at cruise - but when I asked on the LX forums what an acceptable advance figure for low load cruising was - I was told no more than 30 degrees!

I myself run about 36 at 3000 - 4000 at 3 PSIa, and there's no pinging at light load and the plugs are fine.

Its contradictory advice like I received on LX that makes me wonder if most people actually KNOW anything about the motors they are "tuning"........

Your efforts at replicating the factory tune advance seems far more sensible..;)