Ok, so the tone knob on my Ibanez RGR320ex seems to be very loose and almost like its gonna fall off. It is the tone dial below the volume knob.

How do I go about fixing this without having to bring it to the store?
I think on the side of the knob somewhere there should be an extremely small screw, like the size that they use in sunglasses,


I have problem with adjusting the Ibanez GRG170DX bridge...do you know what should be hight of the bridge on the bass and on the high E side?

I know how to ajdust but i don't know what should be right height.

Thank you in advance!