I noticed recently a slight knocking in my truck when im driving, it increases with speed not with rpms, and i just recently swaped my hubs out to from auto (broken pieces of ....) to manual hubs, and i thought that maybe one had come loose or something, well my driver side front wheel i was able to wobble just a little, so i took the tire off and tried wobbleing the whole thing again, and noticed a little movement from the whole u-joint. Is this related to my changing the hubs? or is it just conincidence that this happened now? And is it a mojor problem i need to replace asap or something i can ignore for awhile? lol!

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1997 Ford Ranger XLT extended cab.
204k miles
31x10.50xR15