Last night I removed the port side Drainmaster valve and found an issue that I have read about on other Valterra threads, the replacement Valterra is 1 1/4" shorter than the Drainmaster. I contacted Mission the manufacturer of the 3" Sewer Coupling and they said that the 4 1/8" long coupling was the longest they manufacture in a 3" diameter. When I explained the type of installation of their product oh the verbal disclaimers came a flying out! Laughing... Anyways what is the dealer solution to this valve swap and extending the hose from the transom to the gate valve?