Rewiring Williams by Bachmann True Blast II Board to start in neutral.

[gartay52]

I have Item # 20304 Chicago and Eastern Illinois BL-2 which I purchased in 2009. I want to rewire ckt board to have engine start in Neutral so sequencing will be N/F/N/R/N Etc.
I have an old diagram that shows the wiring for an older ckt board. Does anyone have info or a diagram to show how to rewire the True Blast II Board? Thank You