Mystery 318 wants 30* initial timing?? Pinging hard

Compression test? What's that?
This has been directly asked or referred to at least 6 times...
and alluded to a further 8 times.
Posts 2,3,4,8,10,11,13,14,15,16,18,19,26,29, and now30.
Of the remaining 15 posts, I think 6 or 7 are yours.
So basically, since Monday,nearly two thirds of all posts are referencing compression; better than, every other post.
What's so secret about your cylinder pressure?