bridge screw slipping?

[bbbob707]

i've got a 75' reissue j-bass and just put on a pair of cleartone lights and the last two times i've played the e string bridge has slipped down quite a bit.i did notice that the difference between slappin around all sloppy like and being in tune was very little.i love the bass and like the strings so any advice would be appreciated,thanks!!

[bassteban]

Blue Loctite- available at any hardware store.