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GSO Dob / Teflon
I've noticed some white residue on the alt fittings of my GSO dob. I remember when I got it some advice about the teflon pads. A quick site search reveals a lot of posts, many about ebony star (whatever that is!).
So, does this white residue indicate the teflon pads wearing? If so, what should I replace them with? I guess if friction gets too little the scope would become unstable!
Any advice?
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