I have a 1974 (I'm pretty sure) sears eska 5hp with an internal gas tank. I got it to run, but it POURS fuel out of the exhaust port when pulling the starter cord and while just sitting there after running. I suspected the needle valve not sealing well so I bought a rebuild kit and replaced the seal, needle, and all other seals included in the kit. The problem still remains, am I missing something obvious?