I am trying to remove the tank probe well nuts in my black tank to replace the probes with Horst Miracle Probes. I can loosen the old probe but cannot remove it. I didn't want to cause damage so I stopped and am trying to find someone who can help. I was hoping to use the See Level system but apparently in my 2017 Big Horn 3270, the black tank is not compatible with that system. The tank is an Alpha Sys LLC. I also have a serial number that is on the tank if it would help. Thanks