Update agian... I removed the master and had my son apply the brakes and the first pic is what I saw. This hard plastic thing the pushrod is in comes out with the pushrod, and it presses against the piston to the extent of its travel, and the pushrod is floatong loose in the master cylinder hole. I took the pushrod completely out and still had the small amount of fluid to the back brakes! I spaced the pushrod, and it was too long and engaged the brakes when I tightened the master to the booster. This hard plastic this spins freely in either direction, but will not unthread and I can't pull it out with a reasonable amount of force. I was thinking a bad booster somehow, but I had the same problem with a prior known good booster, although I never looked at it with the master off. The second pic is with everythng at rest, and it looks normal.
I have a new booster coming this week for my Caprice, I will compare and maybe install it on the Elky just to see.
This is weirder and weirder...
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