Just had this response
That’s an MSK500V.
You can exchange it for a new one with Edward Mathias for £11 plus £3 P&P + VAT if you send it in.
Or check eBay for Mutoh Smart Knives if you want just want one new one. That would be the cheapest at £24 all in from the Signtools UK shop on there.
OR if you want 5 at a big discount it’s back to Edward Mathias again for 5 for £75 plus P&P and VAT again. Also available on eBay if you look for the any 5 Smart Knives option and send a message to say the type you want.
Edward Mathias’s number is 01928 739 799.