Similar situation, I have a PDG Series 5 that was too small for me, and finally found a Waterford PDG OS in the right size. Did not want to wait to try out the new frame, so stripped the series 5 to build up the Waterford, all I needed was new cables, and tape. Waterford doesn’t ride any better then the Panasonic built Series 5, and finish and build quality better on the Panasonic frame, but the Waterford fits better, so wins out. Have decided to source some better components for the new frame, but for now the 105 components work just fine.
Tim
1992 PDG Series 5



1991 Waterford PDG OS