Thank you for the info, _CG_Thibaud! The arena is a much faster way to find a losing match to see if the code is still faulty. I went for one last hurrah. Turns out it gave me 2 more hours to play with the silver ruleset before promotion! Bronze to silver was 15 min. Plenty of time to find and fix a few more bugs within the Silver ruleset. 
My biggest error with silver turned out to be my ability to do collision detection. The second, when to do a boost.
Collision detection spoiler
distanceBetweenPods < 999
Replay of my favorite silver race was vs @creativeApe : Coding Games and Programming Challenges to Code Better