Originally Posted by Pattojnr

the tuned engine has a 0.2 shim under the sleeve. so this raises the head clearance, then the 0.2 shims on the button make it 0.4mm . its actually shimmed for 20%, so running 16% i would remove one shim. but the engine was still nippin up on the starter box by the Afinal. so i left the 0.2 shims alone till it loosens up some.