Hi Gang. Heres one for you all! I have a 1965 CB160. I have as of late been trying to sort out the engine. After 4 times taking it apart and putting it back together again, I cant help but think my cam chain is too short! I have ruined 2 sets of cam journals and cannot figure out why! First time, cam chain seemed too tight, had difficulty making the cam master link fit. Had to use a small pry bar. Put the cam in the journals first. After it was all together, started right up and ran around the block. Then started to run very sluggish then froze! Ok took it all apart and had a bear of a time getting the journals off! The first set was scored at the bottom. Second attempt. Different journals, emeryed the cam ends to shiney, this time , leaked oil at the cylinder base and ran about 20 minutes. Same thing! Ok so now I was most meticulous with cleaning the surfaces and oil passages, New journals and gaskets and cam chain, 82 links, Aligned the cam and put the head cover on and tightened the bolts first! The journals almost slid on, HOME FREE!! NO!!!Started right up, oil out the base of the cylinder(left side) shut her down after just a minute or so. Took it all apart yet again and the bottom of the journals were starting to score!!! Also, do the knock pins at the cylinder base each get an 0 ring? I am at the end of my cam chain!!! Thanks everyone! Bruce(Majic 2)