I love this pedal. It has some fantastic sounds going on but recently has developed a habit of switching off for no apparent reason. I engage the pedal, sonic bliss is resumed ...and then pedal just switches itself off for no apparent reason other than to wind me up. the timing of it deciding crapping out is entirely arbitrary. If I switch it back on again everything is ok- but then starts to do it with increasing frequency, so that after an hour or so it only gives me a few seconds of fun before. Sometimes it goes for weeks without doing this and then just decides to spaz out on me. any ideas?