Broke down and got a wide five balancer adapter,  with three vehicle in the collection with wide fives

That's the same one we have.  Very nice quality!

lets you balance wide five pattern wheels on a modern balancer

S.C. - Yep, you have to pay extra for that at most places.  But, a wise old tire guy told me once, and I quote, "I can ballance an egg so it will spin smoothly, but it's still gonn'a roll like an egg."  If you have the crack in the tread rubber cemented together, don't waste your money on ballancing.