I'd even propose for NASA TX to pay Mr. Mitchell for his time. I couldn't see it taking more than an hour to move the tires and wall section back. Two people at $20/hr would put you at $80 to move the wall. Charge NASA TX $300 and increase the entry fee by a few bucks (less than $5).
I personally would gladly pay the difference to have the added safety margin. (Considering I could pay that $5 many times over for what it is taking to fix the car...)
Just an idea to ponder. Clifton, can you respond to acknowledge my idea.