Hi Ruth Ellen, Yes I'm in England UK, I live on a small island off the South Coast , The Isle of Wight. I am hoping to relocate to Devon though when I sell my house here.
Sorry to hear you have asthma , that's nasty.
I tune one banjo gCGBD and the other to eAEG#B the lower tuning seems to suit my voice better, I'm Alto.
I'm a bit lazy and do read TAB if it's there but if it isn't I can read notation in C tuning.
The TABs that you downloaded may not have been in the same tuning, for instance if your 4th string was tuned to D and the tab required C then it would sound wrong , there should have been some indication on the tab though as to tuning. A tip that I read recently,( and am trying myself ) , about melody notes..... try and find a piece of music ( TAB ) that you know, pick out and learn the melody, before you put in the additional notes.
I downloaded Morley too, but then found " Ellis's Thorough School for 5 string Banjo" and liked it better, it hasn't got Tab but the pieces are easy and quite pleasant with second parts to them. I thought I had downloaded it from this site but then couldn't find it . If you would like to try it I will find out from where I down loaded it and let you know.