I Give Up - Why an A-904 Rolls A Sprag?

TrailBeast said

Just off the top it seems like it would almost have to be a linkage issue.

Do you mean for no apparent reason it shifts down into low all by itself?
And that this is why the sprag is rolling over?

Click to expand...

Thanks for offering help.

The '61 A-904 is cable operated from the pushbuttons (no external linkage on the trans).

When in "D" and taking off (slowly) from a stop, instead of shifting from "1" to "2", is shifts back down into REVERSE and rolls the sprag.

Same result as if one was driving 20+mph and manually shifting to reverse. It frags it. :pale: