Tom, welcome to FTE, hope you can post up some photos. You've pretty much done all you can do to the fuel system after you rebuild the carb. Beside the canister filter on the pump, if you had that style fuel pump, there may be an inline filter between pump and carb base, and possibly a ceramic one in the carb body. I actually found all three on my truck when I got it, the PO 's idea of redundancy is good, I guess.

If the rebuild doesn't "take", you might have to buy a reman one and they are hit-or-miss in my experience, so I go new usually, as I cannot seem to have any luck rebuilding the simplest of carbs.

Also, you may as well remove and clean and possibly reseal your gas tank, if it needs it.Be a shame to pump crud through your new carb. Let us know how it works out.

Steve