Hi Group. Just purchased one of these little darlings and I need to find a sound module/chip for it. Checking eBay reveals that there are none to be had.  What's up with that? Did Bachmann stop selling them? They still have an active unit in the 2025 catalog and it says it needs a sound chip and gives the part number. Looked on Bachmann catalog today and can't find anything on the sound module for the engine being offered.  Any thoughts? Anybody have one for resale to me?  Bill McCourt, Dover, DEL