For me it was the opposite, the OE cranks are fine with the rope seals, only with the neoprene seals the hash marks required attention, or at least checked.
Depending on the brand aftermarket crank, where the hash marks are more pronounced, require attention, with neoprene seals, but I can't say for rope seals, because I personally have not tried a rope on an aftermarket crank.
I think Eagle cranks have serrations, and Ohio ones don't, but don't quote me on that.
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1970 GTO Judge Tribute Pro-Tour Project 535 IA2
http://forums.maxperformanceinc.com/...d.php?t=760624
1971 Trans Am 463, 315cfm E-head Sniper XFlow EFI, TKO600 extreme, 9", GW suspension, Baer brakes, pro tour car
https://forums.maxperformanceinc.com...ght=procharger
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