glad to hear you got it fixed!!!!
one thing to remember though, when you pull a trailer that vibration will come back, if the trailer is heavy enough to change your driveline angle. The vibaration is a nusance, but not hurtfull to anything.......you can only fix it to not do it either loaded or unloaded...its rare to have a truck that doesnt do it one of those ways.....some guys just dont notice it....