09-08-2022, 07:10 AM
Although our coach is light years from the engineering on your Newell, some basics don't change a lot. I have also overfilled the waste tank in a cleaning attempt. There were no leaks revealed on the top of the tank. The overflow pipe worked well. Our overflow pipe has 3 90 degree ells in it, but possibly could be a source for odor on hot days.
Guy & Sue
1984 Classic 40' #59