I bought a set of these Park Tool bushings to use with my homemade tool and they help. I seem to remember paying less than this, but it was 6-7 years ago. Right now my threaded rod is much smaller diameter than the openings in the bushings, so I have to pay close attention to make sure the rod is aligned along the head tube and even so it takes 2 or 3 tries before I’m satisfied. I’m thinking if I get a fatter threaded rod it would make the process easier.
https://planetcyclery.com/catalog/pr...RoCvpcQAvD_BwE
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N = '96 Colnago C40, '04 Wilier Alpe D'Huez, '10 Colnago EPS, '85 Merckx Pro, '89 Merckx Century, '86 Tommasini Professional, '04 Teschner Aero FX Pro, '05 Alan Carbon Cross, '86 De Rosa Professional, '95 Gios Compact Pro, '95 Carrera Zeus, ‘81 Masi Gran Criterium, ‘81 Merckx Pro, ‘89 Cinelli Supercorsa, ‘83 Bianchi Specialissima, ‘VO Randonneur, Ritchey Breakaway Steel, Rivendell Rambouillet, Heron Randonneur, ‘92 Ciöcc Columbus EL