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These black “screws” or “bolts” are not screws or bolts but spring loaded locking pins which should not require any intervention, when you extend your scope along the truss rods or tubes to the full extent , these pins are meant to Align with a hole and self lock in position under spring tension. The only bolt or screw you should have to touch are the 3 little chrome tension cross bar bolts.
Does that make sense ?
That’s why it’s not mentioned in the manual , however they should have mentioned the purpose and operation of these black spring loaded pins in any case !!
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