I and several of our camping friends have Weber Q's. I am sure this would work fine with others as well. I removed the regulator from the grill and replaced it with a quick disconnect fitting. I also installed a quick disconnect fitting AFTER the regulator on the camper. Works like a charm. The key is finding out if you have the QD on the camper end installed before or after the camper regulator.
I had some similar issues with my home smoker, so I removed the OE regulator and replaced it with an adjustable one. Now I can run the smoker as low as 120 degrees or hot enough to burn anything I want to.
DISCLAIMER - if you remove the regulator from your camper grill, NEVER connect that grill to a propane bottle or disaster will ensue.
2014-3950, Full Paint, 17.5" tires, 370W solar, 3100W Magnum inverter w/ AGS, 7500w diesel generator, Micro-Air Easy Start 364 (x3)
2019 Ram 3500 Limited w/ Max Tow pkg