Its not my money, but I am always good for $0.02.
I hate to see all of this continue on. From the start, the project has been doomed. This guy, that guy, doesn't matter. The initial build failed. I know it is going to be expensive, the best lessons have a price tag. I would go find George and work something out with that guy. I think he has just been getting busier these days.
Cut your losses before you incur more on a chassis that will never be right. My example comes from a car wreck last year. I hit a dog at 75mph. I knew the car wasn't right. Insurance fixed the car. Insurance fixed it again, because it wasn't right. I went and took it to two different shops that said it may never be right (thanks for the honesty fellas). So, I went in and bought my wife a new car. It cost me a chunk of money right off the bat, but I have had zero regrets. We went on vacation and she wasn't worried about the front end/steering killing us. There were no driveline vibrations and it just felt ****ing good to be rid of the cancer that was the little silver car.
I'll leave you with this. If you have another issue with this buggy, will it hurt any more or any less? If it runs great and has zero issues for 5 more years, will you love this buggy? Reality is that you race. You are going to beat the **** out of it and the other weaknesses are going to show up. It will fester and possibly push you out of wheeling. This buggy is cancer and the only way to make it right is to cut it out. Right now you are doing Chemo and radiation on cancer that should be cut out.
*Disclaimer - I have lost multiple family members to cancer, one this year, so I do understand it is no laughing matter and don't use the term loosely. Anything that drags me down and causes pain in my head or heart gets cut out of my life.