So I just bought a DIME amp and the foot switch is a little confusing. So the amp is a 2 channel amp channel 1 (clean) and channel 2 (metal) when the foot switch isn’t plugged in both channels stay on (cause there’s not a button on the head to switch channels) so both channels are always on you just have to turn down the channel you aren’t using at the time then turn the other down and one up to switch which is aggravating for quick switching so when the foot switch is plugged in it has 2 buttons 1 (channel select) and 2 (both channels) so when you plug it in the clean channel light goes off and when you press the channel select button all it does is turn on the clean and doesn’t turn off the metal why won’t it switch in between channels help please.