Hi Blight,
Do you have a link to your station? It's possibly a WH3080, which has a different record format to the 1080/2080 to account for the UV and lux. Unfortunately Fine Offset use the same ID's for most of their hardware so it isn't possible to differentiate.
[Edit: If it has solar and UV then it's a 3080. If it isn't, open the Live Data View from the Tools menu in WeatherCat and check what the rain channels are doing there].