Hey all. Just saw the Katana mkii 50 amp.noticed right away a better use of the effect knobs. I own the 1st release bout a yr now. Right away I am want to switch out the 1/2 this effect 1/2 knob other effect. I went to Roland's part page.couldn't find a link directly answering my inquiry. There are other knobs out there that do the same thing. The ones for Boss mk2 would be my choice.How does one go about ordering those parts? An outside vendor perhaps? And yeah. I know. Heh, I void warranties on a regular basis. btw, this is my 1st amp/guitar. I am assuming that those pots are not soldered into a pc board.Hadn't looked at this point.make it a bit tougher for me, but doable.This worth undertaking also?