well i dug into the max yesterday, removed the bash pans front and middle, took a long look and feel of the drive shaft, this is a 2022 with 500 miles. front shaft tight on diff and tight on rear front splines, no noise from that at all. took ahold of the rear shaft no plat up or down in carrier bearing and no up or down in the rear yoke on gear box splines, what idid get was back and forth play that when shoved forward you would get a noise a tinny rattle noise when it hit the carrier bearing. so out came the shaft first the 2 pieces where not synced, it had the green marks but they were of a little more then 90 degrees. i set the rear shaft up in my drill press drilled 2 holes opposite each other ( yoke end onto gearbox spline) and installed set screws, i took the front shaft ,i drilled 2 holes opposite each other ( rear slip yoke on front shaft)
and install 2 grease fittings. after about a hour removing all the revits and drilled them out for the revit nuts i took the max down the road, totally different machine, no noise,rattle no nothing. i used green Loctite on the 2 set screws and grease zerks. waiting for the revit nuts to install the bash pans then i'll put it to the test. i did see where they have a replacement shaft but is on back order till nov. the dealer told me, if its anything like the windshield i had on order for 4 months that i finally cancelled i assume it will be longer so i had to at least do this to see if it would work, how long? i will keep a update .