Im having a problem with the licensed Floyd rose on my Dean. I use the bar alot. After 1 hour of playing, the Nut that holds the bar in is totally loose. This happens every time, and after i play, i have to take the back plate off the guitar, and tighten the screw/nut. I tighten it.....and within 30-60 minutes of using the whammy bar , its loose again How can i fix this problem?? I cant have this problem when i play out, otherwise the guitar is usless to me. Should i take off the bridge, and tighten the nut as tight as it will go with an allen wrench? Or take it to a guitar vrepair man and let him deal with it?