I reprocessed the whole batch, and as the PI gurus (RickS, Troy and Steve) suggested, I applied HDRM to bl...y everything, .. and here is the result ..
Hmmmm, Unfortunately, the very middle of the core is beyond any repair ........
Ian, you have excelled yourself there. The dust is wonderful. The whole image gives a good feel for the bright stars of the trapezium region bursting out of one wall of a thick bit of dust and creating a huge cavity-bubble toward 2 o'clock. Very narrative-rich.