Recently had to repair a "leak" on my Harney Manabloc.
The previous owner was having memory issues and unable to properly maintain nor drive the coach.
He stated he just installed a new Manabloc, but that it leaked like a fountain.
Opened ALL the connectors and found NO GASKETS (i.e. fountain).
A package of 1/2" beveled, rubber washers, a "uni-bit" & cordless drill, patience, and "POOF"!
18 months and counting.