It is funny how you can gain more confidence each time you do something.

Yesterday, I repeated the "locate TDC by finding the null spot trick".  This time it was so obvious where the null was that I went ahead and put a permanent mark on the timing wheel. 

Then I hooked up the timing light and got some measurements.  The backup controller that will be firing the trailing plugs is sitting about where it should be...25* BTDC.  The primary pickup is way off, giving me somewhere around 35*BTDC.  I'm wanting it to be at 20*.  Aargh!  I moved it to far in the wrong direction when I added in the extra advance above the EDIS limp-home mode's 10*.

I've got to go out of town, but the first job when I get back is to make an "adjustment" to my VR mount.