Timing curve mystery

mbaird said

I have my idle set at 850 rpms so I am barely off idle at 1000 rpms . But I may try moving the baseline to 18*. I just dont want to screw up the idle transfer slot position or have it idling at 1000 rpm . I will be hooking my vacuum advance to a ported source ( only source) so that will kick my initial timing up 6 or 7 degrees as well as any low speed crawling I may be doing .
At least thats my theory....

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That’s what the 3D timing map is for. You can lock out the distributor and just use the ignition box to control all your timing, including adding or removing advance based on throttle position and MAP.

The way I read the instructions is you either have to make the box not do anything to the timing or lock the distributor out and let the box run the timing.

I need to read a bit closer but it seems you have the distributor and the box at odds with each other.