With new sneakers almost all the shimmy is gone. I had car adjusted to Tony at Backdraft specs. Much better but still had a good shimmy. Tires rebalanced three times with no luck getting good balance.
Found out that one of the rims on the front is bent. This is the only shimmy I now have since new tires were installed. My cobra is now a car again.
The original tires were BFG front and BFG drag radials on rear. Rear tires were too low on tread for me. I looked around and tried to find tires for the rear that have normal tread.
tom