I use this df9.9a I believe its a 2014. last year of the carb .as an aux or trolling motor. It never started or ran well. Shop I bought from stopped serviceing them right after I bought it. Found another and they said its bad gas. I am quite particular with my fuel. Always treated and filtered (20 micron). and my main and original honda 9.9 ran great. They said they needed to soak it and it will be fine. This engine was as "new". Done and picked up and they covered under warranty,Nice. But it still didn't work. Took it back and they replaced the carb. worked for one season of very little use. It is now stating to display the same symptoms. I have read that i may not be the only one having these problems.Is there a issue with the electric choke or carb on these? or do I need to be using a 10 micron filter?