[Steve Schmauch]

Hello Tom--The original bolts are fine if they are not worn. It would be good to check the fit of those two bolts. Originally they had a slip-fit tolerance. If you can wiggle them, then the bell housing cast iron is worn. This can be a cause for front end wobble.

Use of the rubber ball only masks the problem of a worn ball. At some time the ball will need to be replaced or built back up to round.