Bingley-- you failed me! I was sure as i read the thread you would point out there is a actually a term for the process-- ( i have heard it, but it was a fleeting reference.)
there is a term for Adler becoming Alder, and Pretty becoming Pertty-- where a letter is transposed in pronounceation. Could it be a pertty effect? do you know the term? I think you must! if i have come across it in reading, you must have! Of course is I wrote from home, where i have a nice selection of reference books, in stead of from work....