no problems, that's what R-T is all about :rock:
What I pm'ed Matt:
G diminished is G, A#, C#, E. but then A# and C# aren't in the key of Am, so it's gonna sound weird (i don't have my axe to play your progression now)
BUT in the key of A minor, over the G7 chord (G,B,A,F) is the mixolydian...