New roller tube for old Carefree awning

[maccamper]

I have a Carefree awning on our '74 Ambassador which is in kind of rough shape. I have already replaced all of the attachment bolts and screws and all the rusted screws and knobs on the support arms.

What concerns me now is what will happen to the end caps and internal spring when I replace the awning fabric. At the rear cap, the center rod will slide out of the cap about 3/4", which I don't think it's supposed to do. The end plugs that go into the support arms look pretty much the worse for wear. Photos are included below.

Does anyone out there know if A&E or anyone makes a new roller tube that either fits, or can be modified to fit into the old curved arms? I know the arms aren't made anymore. I am concerned that if the spring breaks or the end caps break while the fabric is being replaced, I will have to buy a new Zip Dee and put in mounting brackets in a completely different location.

Any information or suggestions would be much appreciated.

Laird