Thanks for the great spedo cable instructions, Mike. I'll pick a nicer, sunnier day than has been the norm here and go for it.
Yes, I did get the driveline vibes down a good notch. Got the spline index prob fixed. Other probs now on the ole 280. Rear wheel bearing noises and differential stuff. 170M miles on the 280 is harder on it than the 300. I really appreciate the generosity on this forum. I've been wrenchin' on cars for a good long time (48 years) but never know it all. Steve