I've done this with an SME V -- you are right, you do have to adjust both the Feickert and the arm sliding base iteratively but it's not as endless as it seems -- you sort of reach a space pretty quickly where the stylus reaches the target point and the Feickert downpoint is on the pivot. It's bit like trying to adjust a length of telescoping tube by pulling out both ends at the same time, if that makes sense. Just try it and you'll see. And be sure to double check the stylus and the pivot settings each time.
Now what exact pivot to stylus distance you end up with by doing this will not likely match any pre- specified length but you will have your cartridge fitting the target of the Feickert design. Compare it with where the alignment is set using other methods then give it a listen.
Now what exact pivot to stylus distance you end up with by doing this will not likely match any pre- specified length but you will have your cartridge fitting the target of the Feickert design. Compare it with where the alignment is set using other methods then give it a listen.