Hi I found a problem in recently play. After you changed Mico-Upgrade function 2015-Dec-11, I got M4 Hammer. Before your change, my hammer was not M4 yet. That means your update help me upgrade some parameters(Reloading time). I am not sure whether there was a problem when you migrate parameter data last Dec. But recently i found my hammer's reloading is not fast as other's M4 hammer which upgrade to M4 before Dec-11. Don't you receive any similar reports form other players? Best regards