Ok
Loaded the 87 perf tow tune last night and also the CO settings.
No more hiccup at 40-50 mph.
The economy meter went up 2 mpg.
Did not go over 70 mph at any time, it was only a short drive.
Guess what?
CC shudder is still there.

Still feel a pull or a drag with the motor.
The shudder is shorter duration and paddlelock doesn't flash on and off.
Bill what are we going to do?
Lars