Well, bad news for those who were following the thread: the Shelter 501 doesn't work with the Ekos either! It seems that the geometry of the cantilever doesn't allow a correct ajustment of the VTA (or something like that ... beyond my technical expertise). Thank you very much for all your help. Pablo.
P.S.: does anybody want a Shelter 501 almost new? :):):)
P.S.: does anybody want a Shelter 501 almost new? :):):)