The PDG Paramounts were the 'made in Japan' modesl with the Tange OS tubing yes?
Bob Hufford can clarity this far better, but it's my understanding Schwinn was building the OS PDG series and Richard Schwinn was still putting out US made (columbus/reynolds?)Paramounts at this time.
I have a 91 PDG Series3 The cables go thru the top tube. Tange #1 OS tubing and Tange#1 forks
The bikes came in a white (series 2)with purple fleck and the blue with red fleck (series 3) and I believe either black or yellow for the series 1 (same basic frame thruout, the components were upgraded..rx100 low end-forerunner of the ultegra top end.
I guess the real issue here is the pedigree.
I never refer to my Paramount as a Schwinn Paramount.