'Fools russ-ian where angels fear to tread'
Bill I can understand your bitterness that it was a part designed and built by yourself that ultimately ended your rally. Nothing anyone says can make that go away. But don't beat yourself up over it- yours was a stout effort on the available budget.
Many of us learned a huge amount by following your build. Including a few priceless lessons from the school of hard knocks. For this I thank you. Thank you for sharing it all so openly.
All the best for whatever you do next.