I want to do most of the assembly myself because i like to be hands on. Both of the shops here locally are more than welcome to show you your engine and the progress that they are making. Of course I don't know anybody that is a pest to them either. I figure for the amount of money you are spending on thier labor, they should be proud to let you know how it's going. I suppose the big shops are more like assembly lines and can't let people in because of safety issues, I'll stick to the little mom & Pop shops where I feel good about what they do.