Checked the clearances again, same numbers. After measuring the existing shims, I need a 2 x 2.40mm, 1 2.30mm and 1 2.20mm shims.
I pulled all the shims out of the parts bike motor but none of them will work for what I need (too thick). I will order one of the HotCams shim kits from Amazon.
Also going the order the fuel petcock rebuild kit (which I forgot to order) and go ahead and get a gasket set too (and oil seals). It'd be silly to do all this work only to leak oil from all over the place
That'll also let me pull the head and clean the combustion chambers and remove / clean / measure / lap the valves and put on a new head gasket.
Is there anything else I should check while I am digging around inside the engine? pull pistons and check bores, con ron bearing surfaces, measure rings?