The contrarotator on the drums buggers up so many are locked.
The PCBs blow for fun.
We had one for a while in the shop to wash filters in. I ended up breaking it for parts as we were fixing it more than using it.
They were a great idea but unfortunately not a good product as they were never developed.
If you *really* want one, get one off Steve who is somewhere Birminghamish like you. He has an FB page and will give a warranty.