Does anyone have the proper spec for piston-bore clearance for a '66 Honda CB160 twin? The factory Honda manual that I have states that the clearance should be .004-.008", but that has to be a typo because that's WAAAY too big. For example, the manual for my Honda XL125 gives the clearance for that engine as .0004-.0020". The CB160 should theoretically be even smaller than that since the bores are smaller. Anyone know the proper spec? Thanks.