While lubing my coach last week, I noticed about 1/8 in play in rear most hanger while the others were a lot less, maybe 1/16 in. I called Jon Brazel and he said should be ok. I have 101,000 miles and no vibration.
Do you have a noticeable vibration? How many miles on your coach?
There is no boot over the splines. But make sure you grease that spline fitting too.
Bill & Helen & Bella (Yorkie/Chihuahua Mix)
Last of the Chieftains, 2004 39T, W22, UP tune, Banks, Koni's, Safe-T-Plus, SMI brake
2017 Lincoln MKZ Hybrid towed 4-down, 2008 Jeep Wrangler JK