Thanks Jim...no water leaking from the underbelly...but further investigation reveals a slight downward bulge in the coreplast that may be a sagging tank...as I think back...the only time I have an issue is when the holding tanks are nearly full...I think I will find the line is being pinched when weight in the tank increases...there is no sewer hookups here so my tanks get pumped once a week when the Porta Jon guy services the job's facilities...that will happen tomorrow...I am going to wait until then just to see if my hypothesis is provable...then I will attack the apparent sag...
Regards
