Wondering if you guys could give a little advice. I just got a 2 stroke 15 hp merc 1999. The first test run it had an old fuel line and tank with no breather in the gas cap and it wouldn't idle right, and wouldn't run unless I pumped the primer ball but when it did get past the first 1/3 of throttle it would run great. I got a new tank, line, and gas and took it out today. It starts right up and idles great at low speeds. If I give it gas it wants to bog down and will shut down. Its like it doesn't get enough fuel at first. If I pull the choke on quick second and then give it gas it hops right on plane and takes off great. I don't know much about motors but it seems like its not getting enough suction or something like that. Once it starts going its fine. Any suggestions? Thanks.