i would try sea foam and use a higher octane fuel.....gas is changing and has more ethanol in the fuel. bikes are not set up for the changes and runs badly, higher octane helps. ive had all kinds of issues and all have been cured with sea foam and higher octane fuel. there are going to be more and more issues as they continue changing the fuel. hope this helps. email me if this fixes your issues. Adam_harris1980@yahoo.com