Hi barryhi33 and Blagard-01,
Sorry it has gotten a bit confusing as to what option C should look like... perhaps too many discussion points have become interwoven In a single thread.
So in summary...
Option C requires...
1/ Modification of TWO track pieces as per blagard-01’s diagram in above post of 2/1/18.
2/ The TWO modified pieces each require a single 10-15mm dead zone and cross-wiring of jumpers as also shown in the 2/1/18 diagram (thanks to blagard for creating the diagram - much appreciated!).
3/ Once the cross-wiring of jumpers has been carried out the TWO modified track pieces will be electrically IDENTICAL.
4/ For full SSD DIGITAL capabilities INSERT the modified pieces at EACH side of the ARC PRO making sure the dead zones are in the SAME lane which can be either lane 1 or lane 2. Enjoy full digital including 2-into-1 chicanes and curved lane changers.
5/ For full ANALOG capabilities REMOVE the modified pieces and replace with standard track pieces. In this mode you have full analog capabilities as per the APB C7042. The two lanes must of course be kept electrically separated i.e. no 2-into-1 chicanes that bridge between primary lanes 1 and 2, and any curved lane changers require to have the simple digital-to-analog mod. This is exactly per the requirements of the APB when in analog mode.
A further point of detail concerning option C... if you want to keep the dead zones clear of the start grid thena few standard passive track pieces can be placed in-between the ARC PRO and the modified track. Technically I did this in two photos I posted on 31/12/17. You will see the dead zone just behind the red ferrari. The other dead zone is on the left lane between the ARC PRO and the bridge. This is helpful in keeping the dead zones away from the start grid.
Overall I believe this is a great mod for getting the most out of the current production version of the ARC PRO. Please forgive me if my earlier photos showing a single modified part gave the misleading impression that only one modified part is required. TWO are indeed required and, please note, they are both identically wired!
I have a nice photo which I hope will provide full clarification... I’ll post this asap!
Big thanks for your interest In the thread and option C in particular.
Wishing you a happy new year!