Having difficulty on a few occasions shifting my 2018 Brutale 800 from 3rd to 4th and also 4th to 5th gear. The bike is brand new with only a few hundred miles on it. I e-mailed the U.S. engineer Brian Gillen at the MV factory but no response. Probably due to liability concerns in the U.S. MV's never really have recalls from the factory but use the term performance upgrades. Any advice out there?