My bike runs and shifts great regularly except when downshifting. If I slow down and downshift one gear at a time all is well. But if I depress the clutch and coast up to a light and attempt to downshift all the way to first it get lost in cyberspace or approximately 3rd gear and will not downshift until I take off slowly rattling everything in the tranny and then downshift one gear at a time. Is it internal or do I have a linkage or loose/shifted-moved shifter arm at the tranny. It is a real pain because I constantly forget to go through the gears one at a time and it is not helping the clutch or the tranny. The pedal goes soft and seems to have lost motion in it when I shift all the way down.