The problem is that the damping material
>has to be rather floppy and quite precisely placed - or it pushes with too much
>force against the string and makes the register try to back off. This is often
>a problem anyway for various reasons (usually damper-connected). If the
>register lever screws are really tight it can work pretty well - I find it
>satisfactory on the four, without question.
Having really tight stop lever screws is the only way to prevent the dampers from pushing the
register off. That this was the norm is testified to by the fact that Jacob Kirckman used stop-
lever screws with a rectangular top that fitted the tuning wrench! A _most_ convenient way to
tighten them! I have, on occasion welded extensions to the tops of screws so that I could file
them to fit a tuning hammer. But my welding leaves much to be desired(!) so I gave up the idea.