Vintage Raleigh Grand Prix replacement pedal question
I'm reasonably sure my Raleigh Grand Prix is a 1969 model- that's the year I got it used from my freshman roommate. It has a Nervar crank which I've read may have metric threads for the pedal I need to replace.
The problem with the pedal is that it freezes and forces my foot to roll it forward to free it back up. Has a worn cup (I think it's called). . .
So, I dunno what to look for to replace the pedal, one with "french threads" or regular 9/16" threads? Don't wanna experiment and strip the threads if I get the wrong ones.
Many thanks for whatever advice and suggestions I can get.