I'm currently replacing the potentiometers to Alpha vertical D 9mm pots but I'm struggling to find a replacement for VR3 it has a value of 500RB, is there a potentiometer like the alpha's that I can use? Or does anyone have a link to the original B501 that came in the kit as I damaged the original one that was included in the kit.
I think 500RB is 500ohms but I can't find one anywhere, I am desperate to find a replacement any help welcome

Thanks
B