Jim, I find your story about EM "correcting" your lisp rather disturbing. It makes it sounds as though he was smoothing off your rough edges - is that a fair assumption? Did the CG do this with all vocalists? I like rough edges on vocals - I'll take Jimmy Macbeath over Val Doonican - and surely, if anywhere, the "folk" world is where to celebrate those rough edges?
Or, perhaps it was more the case you were nervous and the CG was helping you beyond nervous tics?