As Dhani san said below, the “taper tooling” has a spring to move up and down? Yes Both 54.2 mm and 55.0 mm parts can be measured without any mechanical job changeover? New model must be modify Taper cone and square up plate only.
If yes, Beer Sing needs to modify the tooling drawing to accommodate both 54.2 mm and 55.0 mm, right? No need edit drawings because new taper cone is accommodate both size.