I have modified too many trashed Calmini steering sets to recomend them in stock form. The bushing set-up may work for some - but far too many fail. The one I have on my X was completely seized and would only turn by keeping it loose enough for the idler arm bolt to turn in the brace. VERY BAD. The spherical bearing fix works well if done right but why not buy a center link, an idler arm brace, and possibly some tie rod adjusters and being done with it.