ARE THE DT 400´s INHERENTLY HARD TO START OR IS IT JUST MINE, JUST HAD THE CARB GONE THROUGH, ANYONE ELSE HAVE A HARD STARTER AND WHAT WAS THE PROBLEM? I´M THINKING MAYBE WEAK SPARK. I JUST BOUGHT IT LAST SUMMER. IT STARTED AT THE SHOP WHEN I PICKED IT UP AND NOW IT SAT FOR A WEEK AND I CAN´T GET IT TO START. HELP!!!!