I got a 99 powder special 600 efi that has been sitting for 10 years without getting started and i want to get it going again. I put fresh gas in it gaped the plugs and pulled on it tell it finally started but its got some issues. It will not idle at all second you let off the throttle it dies and the only way to keep it running when starting is to pull and hurry and push the throttle a little. Its also way down on power and has a bog at about half throttle. Where do i start on these issues ?