Back East Don

While I have an Itasca, I've never had a problem with leaking up in the cabin.  Sure, leaking just about everywhere else.  Here is what I know.  Water problems are a top down thing.  Some issues with cab leaks come from the vent below and in front of the bottom of the window glass.  This is where the fresh air is introduced.  There is supposed to be a tube that drains out any water that enters here and sometimes it gets filled up with crud.  Thing is, it doesn't explain the upper corners of the dash though.  Here is my thinking.  The berth pretty much covers mine.  If it is standing still, there is no way I should be seeing water in the cab unless it is coming from above.  This would portend berth issues which are all too common.  If this is happening while moving in the rain, then I might be swayed into thinking the seal or window gasket or whatever.

You have a post up.  I know it is pretty dead right now.  Good weather and all in the middle of the camping season.  Someone with more experience will chime in.  Also don't hesitate to use the search function.  I did this for a long time before I even made myself known.  I had done tons of work from info I got just from searches.  For multiple word searches place them in quotation marks like "propane valve" as it will narrow things down a bit.

Excellent!  Thank you very much!