I applaud you for taking the initiative to continuously improve the system you're responsible for. These kind of values seem to be hard to find these days.

Serious question, do you also enjoy working on/tinkering with old cars?

I have a few data points where I've found that people who do enjoy working on/messing with cars are also the same kind of people who do what you do. If this is true, it's something you can look for in interviews.