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G'Day Robinsm,
I can't help with much detail but I can describe what my old scope had (15-20 years ago...). I had an F6 8" Newtonian on a Samson Eq mount. Bought it off an elderly gentleman from St Ives in Sydney. He built the scope himself. It had adjustable lever action quick releases on the tube rings, and the tube rings were lined with felt. One tube ring was adjusted tighter than the other, so that with the front ring loosened the tube would turn in the back ring, but not slide axially. It worked like a dream!
Hope it helps,
Al.
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