I'm using Cubase Elements 7 to control a Roland XV3020 synth module to create MIDI files. I've graduated to trying out GM Level 2 and I want to know how to use Universal System Exclusive and Global Parameter Control messages to get better sounds. Is Universal Sys Ex not manufacturer specific? The term is ambiguous and the manuals don't help. The GPC sys ex strings I create in Cubase don't affect the parameters in the Roland. Can anyone give me a basic guide to GM Level 2 as relates to these things? I've found nothing elsewhere apart from the GM2 specs in Wikipedia.