When I had my 2001 F350 I had a vibration after replacing the U Joints in the driveshaft. Ended up taking it to get balanced, they would not touch it unless they replaced the joints with OEM type joints, called the grease-able joints junk, and that was that.
My name is Jeff BUT "My Buddies call me Bubba"
2008 F250 KR 6.4, 2WD
1999 E250 5.4 High Top
1989 Thunderbird SC
1965 Olds 442 X2