I'm in the process of finishing the top rebuild when I looked at the gasket and o-ring kit. There were 8 green o-rings 10 x 1.6. I'm like - "ugh, where do these go?" I looked up online and found where they go. Apparently they are the o-rings that go on the valve guides when they are placed. The o-ring is number 14 in this schematic
http://www.cmsnl.com/honda-cb550f2-super-sport-550-four-1977-usa_model468/partslist/E++02.html#results . The question is, has anyone replaced these and is it really necessary.
Thanks