SOBill (Sweet Old Bill) figured it out.
If that part you found is a 17MM hex, it was probably stuck in the drainplug on the ZF and fell out when you joggled the tranny.
Pantera folks have tried all sorts of things to make a drain plug wrench when you could just buy a 17mm Allen to fit a ratchet or get a 17MM Allen wrench.
That's my guess.
SOBill
That was it. :-) Your the man Bill...Thank you !
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