Thanks Leon.
I’ve been working through a few issues with the tracks. I think I’ve sorted out why the guitars split and phased themselves out of existence in mono - it’s clearly a hardware issue. Although, the software (when I zoom in really close to the wave form) definitely shows the mirrored waves - hence the anti-phase. I’ve learned a lot about phase recently (thanks Jet).
I am yet to test what I’ve learned with any new recordings but I did manage to “fix” the current ones with a bit of luck and good management. I’m not entirely satisfied with the sound so will wait until I find some decent time and energy before I remix. I also need to work through the other bits of advice - they will take longer because it’s a personal taste sort of thing. Reworking the arrangements, even of the drum fills, (for me) takes a lot of thought in regards to the sound and style I was after.
Again, thanks to all who have listened and especially to those who have given such musical advice.
all the best
Jonathan