I have a campy Super Record crank set from around the 1970’s stamped with 9/16x20F and campy pedals stamped with 9/16x20, but am met with lots of resistance when I try to install them.
The cranks came with Time clip in pedals which are also stamped with 9/16x20… these go in easily.
Any ideas what could be going on?
Have also tried the campy pedals in a modern crank and they go in fine.
Edit: I had the crank threads chased and chased the pedal threads using an old crankset from a Peugeot. The pedals went in but holey moley they were tight.