In your situation, with the quill adapter to a bolt on, you do not need any spacers. your headset is secured by the threads and a nut. on a threadless stem I use one (atleast) below and 1 above the stem. the top cap then presses it all together before you tighten the 2 binding bolts.
people often have a large stack of spacers on their steertube to try to raise the handlebars a little without buying a new stem with a different angle. Or maybe because they dont have a hacksaw to cut it down.
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2010 Kestrel RT900SL, 800k carbon, chorus/record, speedplay, zonda
2000 litespeed Unicoi Ti, XTR,XT, Campy crank, time atac, carbon forks
Last edited by catonec; 05-25-15 at 01:45 AM.