Originally Posted by
seedsbelize
FWIW, I used a piece of a steel can to shim a way too small quill stem into my 92 Paramount, and it worked just fine. I know there are few here who would approve. This situation always reminds me of 'Zen and the Art of Motorcycle Maintenance'.
That was likely a 21.1 stem (JIS 1"?) and a 22.2 steerer tube (ISO 1"?) - a total of 1.1mm diameter difference, so a 0.55mm shim is needed. For 1" to 1-1/8" the difference is 25.4-22.2 = 3.2mm, or 1.6mm shim, which would be a goddamn thick can.