fumblin46/anyone, i got the u-joint in my hand and it doesn't have any balls in it like i expected, it just uses bronze bushing. and it's got about 1/16" slop/cap travel back and forth (not side to side or twisting motion) between the caps in the axle side of the yoke (not the brass flanged sides). it doesn't work as smooth as ball bearing models and i'm surprised this design works at all, but can someone tell me how to know if this thing is bad and could be causing my 40mph vibration? the tt bushing has a little play but i don't think it's much over .010. help. i don't wanna spend 120 bucks if this isn't the problem.
thanks in advance.

thanks.

Overland Blue, 1953 GMC 1/2T, 100-22, 228/1bbl, 4sp/4.10 6v, shortbed/fender side/5-window.