[quote name='Clarky' post='1042260' date='Nov 30 2010, 12:47 PM']Thanks Ou7shined. Silly question but what/where is the nut (is it the cross-hatched truss rod screw head you are referring to?) If so, how would I get a washer underneath it - ie, would I need to completely unscrew and remove this first?[/quote]
What looks like a screw is in fact a nut.
A wee (and I mean wee) squirt of wd40 won't do any harm... try not to get it on the wood though.
(doh wrong spelling of "by" above )