I know you know.
Im no motor head and to have a most capable Brother who was a mechanic ,air force ,very smart explain and general ** about the cluster fock known as cars. I generally know some of the ins and outs and folks dont realize the major expense just to open your doors .Rent ,commericial ins ,liab ins .computer for automotive ,to the new stuff for new cars every day.He was the best ,honest and becasuse of that and no help would have worked him self to death.
He has heard "I saw this on the you tube a million times.
Or
On lift ,all apart ,wrong part ,cant get part ,maybe tomorrow.
Maybe if you were a dealer mechanic and maybe dealing with cars serviced by dealers not cave men it would be easier