Battery is over 12 Battery is over 10 under load Removed glow plugs, hooked them back to the harness and grounded them to the battery. They came on. Bright orange. Mower won't start using a portable jump start. It only does this the first thing in the mornin. If I heat the garage up to 60 degrees for a few hours. It doesn't do it. After it starts the first time of the day, its fine all day long. Fresh fuel and two new fuel filters. I'm stumped. Help?