Hello, I am restoring a 1967 sears allstate puch 250 right now and after I pulled off the gas tank I noticed there are 2 ports on the bottom of the tank, one on each side. They protrude about 1/2 inch from the tank and was wondering what are these ports for? I see where the fuel petcock goes and where the oil line goes, but I'm trying to find out what these ports are for? Any help appreciated, thanks.