I recently bought a Diamond Steeltrack for my Edge 11 and mine exhibits no slip at all. In fact, without the focuser lock on, it’s possible to drag the scope around without the focuser moving. It moves smoothly with either the coarse or fine focus knobs.
The SCT version doesn’t have a lot of travel, but allows my to get rough focus with the primary mirror and enable the mirror locks on the scope and then use the Steeltrack to get predise focus.
A mate of mine has both a Moonlite and a Feathertouch and the Steeltrack compares favourably. The Moonlite readily slips. Both are heavier than the Baader.
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