Carb freeze up help

[ak_petey]

not sure what is going on, but I think the temperatures are doing it. but it is only 20 degrees out! I know it is below freezing, but i wasnt expecting this to happen just yet. The truck has been sitting for a few years with the same fuel in it. I think there may have been some moisture that gathered in there and froze up somewhere on the carb.
I have a 770 offroad truck avenger carb on my 454. running a stage 3 cam, a Y pipe I just built

I cant seem to get any fuel to the bowls. i dumped a little fuel in the bowls and it acted like it wanted to start. I checked the fuel line and it did a great job at delivering fuel to the carb. I am running 5.5 pounds of pressure. I added about 10 gallons of premium fuel and some heat.
i think something is froze up in there as not as much more than a few drips of fuel will drop in, not squirting like it used to when it was warm.

I am planning on getting a space heater and some cardboard to warm everything back up , but I was wondering if there was something I could do or take a part on the carb to inspect or check out while I have it on the truck. Thought about removing the carb and warm it up inside too.

any thoughts? or questions about my setup to help me find a solution?