The Karcoma's worked very well over the last 38 years, but cursed myself for pitching them.
So I was pleased to find that Boxer2Valve offers new reproduction units. $80 ea.
http://www.boxer2valve.com/Merchant5/me ... de=1612008
I installed a new set over the weekend and feel good again. A few more months til Spring, but initial testing in the garage shows they're quality items.
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