2020 Emblem 2nd Black Tank Waste Valve March 27, 2020, 12:10:56 am I recently purchased a new 2020 Emblem 36T with a bath and half. I found the 2 gray tank handles and they work OK. The rear bath black tank waste valve is located and working. The middle bathroom is the question, I can't find a black tank waste valve to control it. That black tank is currently "free flowing" to the extension line that has a light weight plastic cap on it. Anyone know where that waste valve is located? Or if it does not have one, how am I suppose to correctly operate that system?