Heya - cheers for the feedback!
Yes - naming difference I think. What would normally be a SID oscillator becomes a 1 oscillator instrument in it's own right in multi mode.
Those values sound correct. Now that you have saved your patch into your MBOX, if you close Rutger's editor and turn off your MBOX, when you turn it back on (and maybe change patches and come back to the Matt Gray patch), does it then still sound the same? If it does, then maybe it's a saving bug in my Sammich's (they both do it).
Can anyone confirm it's OK using a their Sammich?