Recently I purchased a Shindaiwa T-230. For three months we have been using too rich of a fuel mix. 32-1 instead of the 50-1 which it called for (I know, stupid thing to do). Now the trimmer's fuel line is clogged and it running very poorly. Is there a product such as a detergent or carb cleaner to clean out the oil deposits? If not, what should I do. Any and all advice appreciated.