Hi B.D.
I must admit, apart from the slight vocal distortion which I hope I have now fixed, I can't hear the panning imbalance you mentioned.
The drums, vocal and bass are centred. Lead instruments are panned just off centre left and right respectively. Strumming and Mandola are panned 50 left and right respectively and the harmony vocals are panned at 40 left and right. the only slight weight to the left (to my ears) seems to be the snare drum.
Thanks for the comment and tip off to the vocal distortion.

Vic