Grey tank lever won't open
I have a 2013 Keystone Montana 3402RL 5th Wheel.
I can't pull the lever to my grey tank to empty it. I thought it might be frozen but the black tank lever pulled open fine. I can get it to move about 1/2" to 1" then it stops hard. It feels like something very hard so I thought maybe it is iced up, so I put a heater on it for a few hours and it is still the same. I am not sure how to get access to the valve to replace it?
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