I would recommend looking on a site called tindie: adapter-flashcatusb-xport-360-clip-tsop-48-nand/
I was able to find a 360 clip to flashcatusb xport adapter and for the 360 clip not staying on I have seen people use books, binder clips, glasses...
I was wondering if you could supply a parts file and their locations for an individual manufacturing run, I couldn't find any mentions of parts in the GitHub