Welcome Phreak(when)see!
Now your gonna have to start posting with more frequency!
You mentioned that there is a pump in the tank.......do you have an auto trans truck?
If the tank is leaking, you might want to have a look inside of it also.......they are known to rust on the inside and therefore can transfer/pump the rust particles up to the carb......regardless if the pump is in the tank or on the pass. side of the cylinder head.
This could be the issue with the carb also......believe it or not, the rust particles WILL go right through the fuel filter......and I have pictures to prove that!
Some think it is easier to drop the gas tank......it's not! Just unbolt the bed, disconnect the fuel filler tube & fuel filler door cable release if your truck has one, then disconnect the tail lights and set the bed off and out of the way.......doesn't take long to do this and then you can pull the sender out of the top of the tank and have a look inside to see if it's rusty......you can also replace the leaky tank much easier this way as well.......here's a few pics of when I did one of mine.