Had the same steady drip from the Kantleak valve On our 17 Challenger 37 TB. Bought it with 5045 miles, and it dripped from day one. Bought "pre-owned " so no warranty other than the damaged cargo doors that we made the dealer agree to repair( documented on the sales agreement, as a condition of sale)that's a story for another day . After emailing Anderson they offered to SELL me their NEW AND IMPROVED Kantleak valve for $165 + shipping ! I said that's quite a Racket ya got going on there, selling a faulty part to the Manufacturer, then turning around and selling the repair/replacement part to the end user, BRILLIANT !
I took my Kantleak apart and cleaned GOBS of Blue Plumbers Putty from around all the fittings, and even inside the valves, tefloned all the threaded connectors, hooked it all back up, now my Kantleak, dont Leak ! Suck on that ANDERSON !
Now I'm having a problem getting my Remco 55 Aquajet- ARV water pump to shut off ! I can't find a leak any where.