I inherited a 2003 soft-tail springer 100th anniversary edition from my late father. This is my first bike and I absolutely love it. It does have a bit of a sputter or miss when throttling down. I found that if I keep the choke out slightly that it improves, this happens even when the engine is hot. Thinking I might need the carb tuned, but I´m not sure. I don´t want to take it to a dealer if I don´t have to. Any ideas? Thanks