I have scoured the internet unsuccessfully, so maybe you gear gurus can help me out. I recently came into possession of a Boss BF3 Flanger, which was sold as-is for $40. It was a steal, and everything works except for one damn knob. The leftmost knob is a double-knob, where the inner control is res and the outer manual. The manual knob is broken, and just spins indefinitely without controlling any effect. I figured I'd buy the pot and switch it out, but I can't find the part number for that pot. Can anybody help out? Thanks!