Andy, doesn't Lomo have a manually operated Instax back for their Diana and LCA cameras?
If I was looking to do this again, I would have spent a few more $ on one of those Diana F+ Instant kits. Better VF, better exposure control, maybe a small drop in IQ, but no electronic malfunctions or motor jams. I also have a soft spot for crapy old toy cameras, which is proly why I bought the Fuji 210 POS to begin with 😉