Yikes, sounds like a much better option to do it yourself if you know how to do it D: I'm okay with my current centre as they aren't terribly expensive (unless there is actually a lot of expensive work to be done) and the work is actually good, but will have to drop them if I move too much further out (I already hate driving to them as is).

One of my partner's grumbles about "cars these days" is how they're getting really hard to self service not because of the stupid warranties but because of the increase in t he amount of moving parts. Do something wrong and you kill the electrics and everything dies a slow horrible painful noisy death. Suppose it's not too bad if you're an electrical as well as a mechanical engineer XD