Hello. I had hardly any internet connection to get replies but we did figure it out. The handle would not re-connect. Fortunately a friend was nearby and had a Dremel I used to cut away the sleeve where the valve seats. I pulled out the gate with some pliers, not entirely a clean job as you can imagine. The black tank emptied to the next gate where I opened that and it free-flowed and emptied into the dump station where I did this job. Thankfully there was no one waiting to use it. I will be replacing the valve today. I can only imagine how much it would cost to have an RV mechanic do this, especially with a full tank. My dealer doesn’t have a dump station so I don’t know what we would have done. Plus, driving 400 miles with a full black tank might have ended in disaster.