I recently bought an Electribe Rhytm and now have it hooked up to my SP-303 and my MicroKorg with the Electribe sending the timecode to the other devices. When hitting play on the Electribe the pre-selected pattern on the SP-303 plays in perfect sync, but when changing patterns in mid play you have to be very precise to stay on the beat. Does anyone know how to select a pattern during play and have it start on the beginning of the next loop of the master timecode device? Or do I have to keep hitting stop & start? Ive seen the damn thing do it once (Im pretty sure of this) but Ive never been able to recreate this situation. Any help would be greatly appreciated!

I don't use midi too often and never with the 303, but I'm almost certain you can have midi cc notes control the pattern triggering. All I can recommend is going to the S.P.I section and take a long look at the manual, it should all be there. To my knowledge there isn't a special trick to make it receive midi.
I sure someone hear knows midi a little better than myself. Good Luck