I bought a boat that had been sitting up about one year, according to the owner. I pumped all of the old gas/oil mix out with an electric fuel pump, put in one bottle of water remover and then 32 gallons of fresh fuel and oil mix. When I started running the boat, a slime, gel substance would clog up the pickup tube in the tank (70 gal.) It will run sometimes for a couple of hours and then collapse the primer bulb. When I pull the pickup out, the gel is trapped in the tube in the metal strainer. I put one can of sea foam in the tank but have not had a chance to run it yet. Will this dissolve the gel or is there something better? Thanks in advance for any info.