Thanks for the info of the nasty little belt!
Maybe a cheap solution for the belt. My wife had somewhere in her hobby room a "Bracelet Pack" with many little "belts". I have mount one in my MDS-E12 and it works. How long it last I don't know, but it is very cheap. I have sticked a little plastic bag with 10 spare "belts" in the recorder.
(I try to load a picture of the bag with "belts"...)