Oldblue58,
You have my sympathy.
What is the condition of your rear spring shackles?
I had a similar problem when I first purchased my truck. Tires rubbed... not on the emergency cable, but on the frame. Previous owner bought wider tires,in conjunction with old floppy shackles.
I replaced the shackles which helped. However, I got rid of the radials and I am currently running bias plys.