I have the Vixen ed103 rerfractor and official reducer, (f7.7 to 5.1ish)It fits the uncommon vixen drawtubes, and I'm pretty sure they are a pita to fit up to another drawtube. It also vignettes to hell, flats are a must.
Rumours I have heard is go for the William optic 2. I'm pretty sure there was a thread on it on iis about not so long ago.
Brett
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