Hi, ive just recently set up my home recording studio and I'm very happy with it but I'm having trouble with the distortion pedals in garage band . I chose the grinder pedal and it seems to work well but out of the blue the distortion drop out on a random note. I never had this problem with my boss stomp pedals. Is there something I'm not setting correctly or should i forget about virtual pedals and go back to my boss stomp box? Cheers guys.