Mr Gasket Advance Springs

TB
I think I understand your numbers, just haven't seen it written that way before.

In my 360,I run 14-34-60, with a 2stage curve.These are; idle-power-and max.cruise. The knee is around 2800, and all in at about 3400. This kept my stick-car out of detonation in the 2800 to 3600 zone, running a Dcr of over 9/1,and burning 87E10(Eddies). I could have run more timing in there but I got tired of pulling the oem dizzy. Actually I got lazy.It was working soo sweet, I quit chasing perfection.
Using your language, it would be; 14-20-60.
Yeah my can is modded.Its hard to get more than 20 out of a can.

OP, this doesnt help you much, except once you get into it, you will understand the jargon. Slantys like lots of initial. 12* is a good number. And 34* power timing is also a good number. and 54*max.cruise, is almost all you can hope for. So TBs 12-22-52 (my 12-34-54),is spot on. Your task is to bring in the power timing as fast as possible without incurring detonation. My winter-beater slanty has a Scr of 9.5, and takes it plenty quick.
So good luck finding the sweetspot.