I was have a problem starting up. After the start up and run for awhile there is no problem. The first start up is hard, wants it warms up no problem. I can run from the murice to pintop with out a problem smooth, no miss and runs top notch. I can stop fish for a bit if I stay for a long time it is hard to start up. You have to chock the piss out of it to get it started. If you only sit there for a little bit there is no problem. Is it carbs,timing,fuel pump, I changed the fuel line from tank to filter and back to motor plus the primer ball. NEED HELP!!!!!