As I type this I'm sitting in a 2005 Damon.. The only repairs I have done are as follows:
Several things that were my own stupid fault.. (These do not count)
One Air conditioenr.. Carrier Air V, there are a couple of pipes that rub together if thats what is on your prospective I can tell you how to fix it so they wont wear out.
Two control boards Water heater and furnace.
NOTE: I am more than skilled enough to do all this work, and did no the control boards (You can do it and I do not even have to ask your skill level) the A/C I know how to do, but I rather liked the hydraulic muscles the dealer used to lift the new one to the roof and the old one to the ground. My Human muscles are not nearly that strong.