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Or a 3/8" diameter peice. A round rod isn't gonna hurt the bushing.

Grab a piece of stock & grind a hex on your bench grinder as close as you can/deburr it on the wire wheel/some tape on the bushing area if you desire & you're set. As you know turn the crank to oil the heads EDIT read "breakin secrets" at www.mototuneusa.com (excellent 5 min read on ring breakin)

Last edited by RapidRobert; 01/15/11 10:14 PM.