So I'm day 3 with my new MXR Synth pedal... First day the whole thing seemed underwhelming. 2nd day I realize, after going through the video manual, that this thing has a lot of capabilities and I should spend more time with it. Day 3 and I'm playing along with 'Thriller'... The tracking is not good, it does not respond well to a fast sequence of notes. The video manual tells me I can adjust the tracking because the default is for a 5 string and I play a 4 string. The adjustment did not help...tried it twice...tried a factory reset then tried it again... still the same problem. You can't play the 'Thriller' riff without a tracking problem. I played other songs that have synth keys in them, I jammed...still the same tracking problem. Is anyone else having this problem? Any tips or discoveries? I really want to like this pedal and I could really use it but not the way it sounds right now.