RCA Wingate CTC-5 Deluxe Wrong Back
 

It's been a long struggle to make room for it, but now I'm finally about to take delivery of an RCA Wingate 21CD7996 color set from 1956 with the CTC-5AA Deluxe chassis.

As you can see from the pic below, my first problem is that the existing back is for a smaller CTC-5 cabinet and not the Wingate. If anyone runs across or knows about a proper back for this Wingate, I would certainly appreciate knowing about it. I would be happy to buy or trade. I could build a filler panel for the current one, but it would be so much better to find a correct back. Thanks!