Thanks Merlin and Kunama, that's a relief.
I checked my 1.25" last night after reading this thread and the eyepiece tube unscrews from the diagonal! but the ND3 is permanently fixed to the bottom of it, so seems pretty safe to me if used as a whole assembly. If Andrews are selling them without an ND3 installed, which may not be the case by the way (I'm reading the last couple of replies in a couple of different ways), then I wonder the age of their stock?!
On a side note, completely agree that the SC filter provides nice surface detail. The lime green takes a little getting used to after viewing in Ha for awhile, but within very little time I seemed to look straight past that fact. All in all, they're a cracking little white light wedge!
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