Not like that. That's what shop manuals are for. After I was hurt on the job several years ago, I had to contract with a local shop to build a 360 for a truck I had. ....among other things, they put the rocker shafts on backwards and several rockers on backwards. They had an entire machine shop library 4 shelving units wide in the corner of the shop. Could have looked up that information easily.
If you are going to be in the business, it's in for a penny in for a pound if you are taking peoples' hard earned money. Absolutely no excuse for mistakes like that, AT ALL.
