mine did too during break in, after everything loosened up, no problems.Mine did it for the first couple rides and now after I have ridden it for a couple months doesn't do it anymore. I think the efi adjusts and levels it self out per riding style. I don't know if maybe I had changed the way I rode or the xx adjusted to me but it fixed itself. I would wait a bit and see what happens. just my 2 cents.