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While I'm at it, can anyone tell me if there is anything tricky in tightening up the 10:1 focuser knob? It doesn't seem to have very much torque on the shaft and even if the focuser tube lock knob is only just just tight, the fine focuser wont move it upwards against gravity while the larger knob has np. If the lock knob is any looser when i tighten it the focus shifts slightly.
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