Hi CR folks, First a thankyou to all who responded to an earlier question I had about restoring a '72 P-13. The info & pics were very helpful. Now for another Paramount question. When did Schwinn stop using the clamp-on rear derailleur cable stop & start brazing on the stop for their Paramounts? I distinctly remember the P-13 I bought back in 1972 having the clamp-on stop. But the '72 frame I am presently restoring has the brazed on stop. I know from serial number that my current frame is a '72, but have no idea what the serial # on my old frame was. Thanks again, Greg in snowy Ridgetop, TN