Hi, I got my Chrysler 70 HP to run, went to the lake and had to spray fuel into plug, then it fired right up at, 3 quarter throttle, not to bad, but when you put her full. it would completely die, brought it home and took bottom off carbs, found sand and dirt in bowl, sprayed out as good as possible with carb cleaner and put back together, now it will only run till the fuel burns out of the plug Please.. anybody