Hi
Unfortunately this part doesn’t appear to be available yet probably because of how new the device is
However I do have a solution for the issue you are having
1)you could contact valve and see if you can have it repaired under warranty (if it’s in warranty of course)
Or
2)you could follow the guides likened below
[guide|148939|new_window=true]
[guide|148981|new_window=true]
And try carefully cleaning any debris away using isopropyl alcohol and a soft brush ,doing this will hopefully clear away what’s causing your issue
Hopefully this helps
Any questions please ask
Thanks:-)