So very stuck...

So I'm gonna slowly turn up my can, test and adjust until it pings at cruise. Then I will back off 2* and test... if it still sounds a little pingy I'll back off another 2* on the can and test. That should give me my full timing range. And I'll put in the medium spring (running 1 light 1 medium spring currently) and test again to see how the can responds. It may be my current spring is the best but I'll test just the same.