just bought a used fx8 mark 2 unit and spent a couple days now trying to get it down.not happening thus far.seems like the effects dont get saved ,and cannot get the wah wah function in the presets to work.running the 4 cable method.my wah wah worked before.i calibrated it ect, but now doesnt work.how do u reset the unit and start all over,and which settings are recommended?any help would be appreciated greatly