I took my MP apart and saw that all 4 buttons (sync, cue, play/pause, stutter) are connected on one strip. I called Numark and they said the part was on back order (no wonder) but it was only $2.00 plus shipping. I ordered them but when they come in I do not know. Still love my Mixtrack Pro. I was able to glue the right onto the tab but who knows how long it will last.