Re: Guitar synth trouble
+1 for resetting the GR-20. To a novice, it may be difficult to identify whether a patch uses all six strings or just a few of them.
String muting is a major element of MIDI Guitar and guitar synthesizer technique. During initial set-up, it may help if you prevent the strings from resonating except when you actually play them. This should eliminate false triggering and, hence, reduce confusion.
It is possible that the GR-20 patches have been programmed to yield notes at a different pitch than that of the string that triggers them.
If individual pickup elements appear to be sensing the wrong string, either the GR-20 patch is programmed to not respond to some of the strings or the pickup element really is sensing the wrong string. (On my Chapman Stick/Grid, if I hammer on the lowest bass register string hard enough, it can trigger the Roland pickup element for the lowest melody section string. The result is a faint, deep gurgle rather than a strong, true note.)
