Tangentially related question: At U.S. Nationals, they use concrete to patch the track surface wherever it's breaking up after every run day. Could we get permission from Westerner to do the same? It seems like a win-win, since neither party wants the pavement to break up more than it has.
I did at one point ask Westerner whether we would have the option to pay or hire contractors ourselves if we desired repairs beyond what they deemed necessary and as I recall the response was that they did not want that to happen. I didn't specifically ask about concrete but I don't think that would get a different answer. Perhaps they could be convinced but I haven't spent the time trying as it hasn't proven to be necessary yet.