Saddle height screw undoing itself

AJS

I have a number of guitars and basses and this is a problem I have never come across before. 

While I am playing one of my basses one of the saddle height adjustment screws is undoing itself presumably because of the vibrations.

I did a gig two weeks ago and after 45 minutes of playing  one of the screws had vibrated back into the saddle meaning the low E string was unplayable due to the fret rattle.

Do I need a new saddle or can it be cured?

Funkfingers

ICBM usually suggests adjusting the saddle height, then, applying a drop of Loctite Threadlocker. This comes in several strengths. Try the blue Normal first. 

AJS

How does the loctite run down the thread ?
or do you just put a drop on the top of the screw?

ICBM

Yes, it will run down the thread if you put a drop on the top. If you don't have threadlock, you can use clear nail varnish or (preferably cheap - it's not as permanent) superglue. It's best to put some kitchen roll around the bridge while you do it in case of drips.

AJS

Thanks for that 1 will try the loctite blue