What's crummy is that we have to deal with somebody that is not next door. It's a giant pain in the but to have to pack it up, take to the shipper, and then pay for shipping....what's good is that we get to deal with the shop directly...you don't get that everywhere!!
So, sucks, but send it back!! you need the sheath to fit even if you do buy another...we all just rent these...and it will increase the resale value if both sheaths fit...
:-)Rocky