Thorough. Comprehensive. Seems a little pricey, comparing couple parts used w/ available online items, e.g. Of course, I may feel that way solely because I haven’t yet paid off the cost of the last repair 🥲 Easy stuff I can do myself and save, like a heater valve I replaced recently. But if I can’t tell what or where the problem is, or physically just can’t manage the work, it’s time to call RM.