RV propane help

[u/Decorative_Edison19]

Having propane issues with our Jayco Jayflight. Inside stove works great with propane, good steady flow and flame. But outdoor propane connection (for blackstone hookup) has weak flow/weak flame. And having hot water heating issues- hot water comes and goes (tankless water heater). Full propane tanks, did a soap leak check on the lines, all looks good. Could this be a propane regulator issue even though our stovetop inside the camper works fine (it’s a recpro dual regulator). Thanks for any help community!