Yz490 missing 3rd gear
I was out riding and all of a sudden I noticed it was hard to shift up from second. So I shut my bike down and tried to move the shifter by hand which I could. So I hopped back on and started riding again and when I shifted to 3rd it just acts like it’s in neutral I can skip 3rd (with more force than normal) and go right to 4th. The other gears work just fine. I dropped the oil and noticed some small metal flakes (oil was shiny) but no big chunks. When I jacked up the rear tire (with bike off) and put it in 3rd it feels like it is normal. Any ideas on what might have happened?