The post game wrap up! I took the RV back to the shop that installed the lights and we discussed a few possibilities, they did a little testing, and in the end, we (I) decided to let well enough alone.
To their credit, there was no issue of them wanting to make it right, and a willingness to test, cut, solder and add resistors, diodes, flashers, additional grounds until they got it right. However, when balanced against just turning my lights on and being done with it, it sounded like the better alternative to me. Plain, simple and already done!
I'll post a couple of pics of how the lights look from the side (the main objective) and the front side marker/turn signal. If you have any question, let me know.
Thanks so much for all of the suggestions/help.