Jim, please do not take this as criticism but, does this not transfer the
problem to the super below?    Seems this solution might also create a
future problem of mixing supers and frames, unless all supers are converted
to Pierco.

Bob Fanning
Huntsville,  Alabama USA

> jim said:
> If the Pierco top-bar thickness is less than the thickness of a wooden
frame
> top bar, why not add a shim to the frame rest?  >