That's good and bad, and it all depends on how involved you get. Tinkering with cars is fun for me, but being a mechanic is not my aspiration in life. I'm way too slow. This job was booked at 2.4 hrs, or so I was told, and I took 5 every 10 so it ended up being 6. It's a good way to knock out a day.
A friend needs the help, and I have the time, so I make some spare change. The concept of a h20 alt. didn't blow my mind, I just thought it to be similar to reinventing the wheel.