The rear brake straddle cables were an issue. Because the straddle cable had to be longer to clear the seat post they kept disengaging through the assembly slot. I bored the cable puck hole out to accept Mafac straddle clamps. Look and work damned fine I say.
The rear freewheel is the current iteration of the IRD body, but with the older stepped sprockets. 5-speed with 34 big sprocket. Of course the '79 vintage Campy NR derailleur couldn't wrap enough chain for that, so I installed Campy Rally cage plates. Eventually the Regina chain may be replaced by a "modern" chain, but I like the look.