My 400EX seems like it is constantly losing and loosening fasteners. I think it's the nature of off-road motoring. Loctite is OK if you don't want to take things apart very often; however, if you loctite a fastener several times you are asking for trouble. The stuff cakes up on the inside of the threads thereby increasing the likelyhood of cross threading the next time you put the bolt in.

 

prm skidplate is 89.95 plus shipping
the stock air filter(in my opinion)moves plenty of air so i just bought a second
one to trade em out when i need to rather than cleaning one and waiting for it
to dry and then applying the oil and waiting for it to dry as well.
good luck.

 

the bolts on my sprocket(i think, i can't remember exactly but somewhere around there)always come off. they came off and shaved off some of my swingarm[img]i/expressions/face-icon-small-sad.gif[/img]