I have one with about 8,000 miles on it, but it is about 6 years old. I had the same combo as you, and stepped up and bought double pumper from Cotton. If you are interested,make me a reasonable offer and I will send it!!
Rich
I have a almost new walbro 340 from kirban-less than 200 miles on it with a new sock- i went to a double pumper so i dont need it-make reasonable offer.