I have a fuel issue with the pony. At first the valve would not let gas through. I messed with it and restored the flow. After starting, the valve would not stop the flow. I got the pony stopped but I knew there was going to be a issue with gas in the oil. Some time later I opened the crank case drain and sure enough...gas. I drained it out, added a little oil, cranked it over and then drained that out. This time I didn't smell any gas. Two questions 1-Do I need to rinse it further and 2-can I get a new valve assembly?