had the new mark v for 3 or 4 days now, and on one of my first rides the cog spun unscrewed just a little bit while skipping. so i cranked hard up a hill and then stopped by dragging my feet, then tightened the lockring real tight, per tony's instructions.

then today i was riding down a slight hill, skipped pretty good to slow for a stop sign, and it happened again. it only spun a little bit--maybe 1/8th or 1/16th of a turn or something-but was quite noticeable. then when i get back on the gas of course it screws back on and i can feel that too.

this has significantly affected my confidence in emergent stopping ability. so looking at the hub, the threads are greased and the cog is a soma, 3/32" width. there appears to be plenty of lockring threads that extend well into the shadow of the cog's shoulder, so i don't think the cog is too thin. and the lockring does appear to seat firmly against the cog when tightened.

so i guess i want to clean off the grease and use some licktite. do i locktite the cog threads, lockring threads, or all of the above? or should i use jb weld?