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Re: Ball posession: Roller (ball magnet) or vacuum?
Do all these lower roller schemes have wheels ahead of them to prevent them being bashed into the humps? Or. perhaps they retract when traversing the humps? Then, if they retract, how can they prevent past 3" incursions when pressure from the ball pushing on them displaces them out of their proper incursion preventing location?
-Dick Ledford
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