Well, I use my Son. As a former mechanic at Soma and a few other bike shops I know what he can do. Of course I taught him everything he knows

. I don't wrench much anymore, I'll take the bike back to where I bought it (last one was Ridleys, they are OK). BUT, I check things after they do whatever they do.
Oh and I make sure that I do my own full checkups before and long rides.
BC Don.