Wear on the lower bushing should only happen in one place as it's got a helical cut gear on it and the cam is trying to push it away I one direction only.
Wear all the way around without any damage to the shaft tells me it was probably pretty darned loose or the wrong size right to start with as it really can't move around in a circle like that with the cam driving it, unless of course the shaft has a pretty good bend in it someplace.........Cliff
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https://cliffshighperformance.com/
73 Ventura, SOLD 455, 3740lbs, 11.30's at 120mph, 1977 Pontiac Q-jet, HO intake, HEI, 10" converter, 3.42 gears, DOT's, 7.20's at 96mph and still WAY under the roll bar rule. Best ET to date 7.18 at 97MPH (1/8th mile),
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