[Dave in MN]

"Then the debris come loose and there is a bare spot that looks just like the shape of a rock or a hex nut where that bare metal began to rust."

Brent, You made me laugh at my own expense.."looks just like the shape of a rock or a hex nut" Touche! That was funny! Thanks! Point taken.

I know you are right but sometimes we just do what we do and just have dumb luck on our side. Worked that way in my case anyway with the two tanks, 28 years on the pickup and 98k miles over 23 years on the Phaeton.
Good Day!

Follow up: Both of my tanks were 28-29 and I would swear the nuts made it into the outboard side of the baffles. I completed some searches of a 1930 tank and I think the baffles are different than a 28-29 if the photos posted are correct. More research is needed to confirm on my side. Brent, you would know if there is enough space for the small nuts to pass over the top of the baffles.