Owned both Pre- and Post- CPSC Record spider/arms and never had any issues, not have I had any trouble with some rub marks from straps propagating/starting a crack in the arm, left or right. I'd be interested in learning if this has or was ever a problem, some of the Campagnolo cognoscenti need to enlighten us on this one, please.

I think you'd be safe with pretty much any Record arm/spider you find here, and just do your due diligence on eBay.

Bill