Dave may well be able to source those for you but he’ll likely need a model number which should be on the rating plate along with the serial numbers etc.
As usual the stove is “plummed in between units and the plate is at the back where i cant get to. however I do have the serial number 621 1030076 if thats any good?
Peter, could you email that to me please as it should be enough info, I’m away until Wednesday and there will be a few new posts by then so I may well miss this one.