does anyone know where i can get a  legit replacement knob for this unit ? my current one is pretty worn out. and if so how do you replace it without damaging the head unit?  thank you!

I have a new knob for your unit that is much thicker and grippier. See http://avic411.com/index.php?/topic/17730-avic-f-series-knob-replacements/

looks like there was a thread on this already. knobs look good. very interested. easy to install? what is up with people asking it with o-rigs? and last question , only those two styles available correct black and silver? thanks for replying to my post. get back to me whenever you can and im sold. thanks man.