Ugh, ss/fg is so full of contrarians....

I'm using a fixed cog on a freewheel hub with a BB lockring, no loctite. No problems here after a couple thousand miles on the bike. I used this tool to install: http://www.worldclasscycles.com/shimano_chain_whip.htm It works for both fixed lockrings and BB lockrings, both 3/32 and 1/8 chains. Quite handy.