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Originally Posted by sanddrag
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I'm not an engineer, nor do I play one on TV, but I hope Andy or someone else backs me up on this...
Use a bushing. We used bushings for our arm last year - worked great. In fact, we used NO BEARING/BUSHING on our arm from 2001. (Just a hardened smooth bolt.) It's lasted two complete regionals and continuous demonstrations/presentations/etc. for the past FOUR years and is still going strong.
-Mr. Van
Coach, 599