Anybody out there with a LaCrosse WS2510?

I am looking to see if anyone is using a WS2510. I just got mine and started useing WD. There are some interface issues and Brian is working to correct them. Does anyone have a good way to correct the rain gauge mesaurements. Today we have had alot of rain. The WS2510 is reading 0.48" total while WD has recorded 0.53". This was after a reset so I could get both insync. The WS2510 uses 300ml/rocker stroke.
Thanks - Lou 8O