Big block, early a transmission mount

The early A-body crossmember should work fine with a 727. Many folks have 727's in their early A's using the stock crossmemeber and mount (myself included). There's something else going on. Can you post a photo of the interference?

What's the 727 out of? Maybe there were some variations in 727 extension housings? Does it have an oddball mount or something cast in the top of it that's contacting the upper crossmember?