Just came on herre to say thanks to the OP and dwcraig1 for this thread and link to evolv helpdesk, and evolv for their fantastic support! Raised a ticket 2 weeks ago and replacement part promised straight away. Arrived yesterday (shipped to UK).
For anyone finding this thread, had the same issue as TNT0305 with the tabs on the side, but easy enough to resolve as stated (see pic). I found getting the (very tiny) screws back in the hardest bit, but that's as much about my eyesight as anything else.
Thanks again evolv - fantastic customer service!