My dad had the same problem on his outdoor grill !! We've not had this problem on our trailer. I wonder if you could go to a place where they swap out cylinders (empty for full). Maybe a different tank would provide some relief . . Good Luck.
2012 F150 FX4 Ecoboost, 2016 Surveyor 274BHS
2003 Yamaha FJR1300, Demco Premiere Slider
1969 John Deere 1020, 1940 Ford 9N, 1948 Ford 8N
Jonsered 535, Can of WD-40, Duct Tape
Red Green coffee mugs