Dismantled the the edu-sci scope and attempt to shim
the focuser tube because of the slop/play when using 1.25"
accessories.
I added 3 pieces of black strip paper to the internal
focuser housing, friction is not a problem as one side
of the black paper in contact with the drawtube is
smoothen with cold laminate.
Finally the slop are almost eliminated! And now with
1.25" accessories there is negligible movement of the
drawtube. Picture above shows the hybrid diagonal from Scopestuff.
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