360 timing questions

Its 3 am in here, so forgive me if i'm fool right now... :)

Have you measured your exact compression? Is there sharp edges in combustion chambers? If you dont know how much your heads were cut, I suppose you have a lot of compression..? If none of those ignition adjustments dont help you, try polishing combustion chambers. :)
And yeah, 67Dart273 is right, dont believe in balancers adjusting marks if you got old balancer! They seem to change position during a time.
I'm not a pro, just repeating what i've heard... Just wanted to give an other view. :)