I have a 2008 Beaver Contessa.  I have a shurflu water filter.  I am changing the water filter for the first time.  I bought one at Lowe's that is practically identical to the one that was in previously.  But, when I reconnect everything a turn the water on water comes out of the water filter unit.  If I put the other filter that was in there before it works fine.  Has anyone used a water filter other than one from Shurflo and have it work OK?