Hi,
I have an otherwise nice wheelset, with 36H Dura Ace HB-7400/FH-7403 hubs ad Mavic Open 4CD 700c clincher rims. Hubs and spokes are nice, but the rims are all scratched up by PO. Not sure if they used vise grips, screw drivers, some kind of clamping bike rack, or just relieved their anger by beating the rims with a chain, but there are radial scratches on both front and rear rim, one side only. I rode them a few hundred miles, and swapped out for some modern C24... but I would like to fix up the older wheels. I have done some basic wheel truing and have a stand, but never replaced a rim or built a wheel.

I am thinking about replacing the scratched 4CD rims. Ideally, a very clean or NOS identical replacement set of rims sounds easiest, since I could re-use the spokes and nipples. But these are not quite so easy or cheap to come by. I was also looking at more readily available options, like new Open Pro C.

Using ProWheelBuilder calculator, it shows the Open 4CD ERD=605mm, while Open Pro = 602 (also found this value in some older threads). But there was lots of debate about the true ERD for the Open Pro, so thinking it might be a drop in replacement. But not sure if I could re-use the existing spokes/nipples.

Is it OK to re-use the original spokes/nipples if they look clean?
Any alternate advice for new rims?

Existing spokes have a small "S" on the end.
Front wheel:




Rear wheel:


Thanks in advance!