<VV> Yenko Carbs Questions?

[Grant]

A customer just dropped off a set 140 carbs for rebuild from a Yenko Stinger since a repair shop in the Jacksonville area was not able to determine why they were leaking. The primaries seem normal, but the secondary ones are from 1960 and they have a sort of rotator linkage system on them similar to what Clark's sells. Hoping there are some owners on our site who can advise if these might be "stock" and if anything different was done to them back in the day that I should look for. They were painted red at some point in their history. If there is a Yenko site, please let me know.
Thanks,
Grant