[Foght]

when i downshift to first gear, not going fast at all 20/25 mph, the bike grinds bad, and falls out of gear.

all upshifts are fine, no matter how hard i run it. it just falls out of first when i let out on the clutch after a downshift.

 

[Foght]

when i downshift to first gear, not going fast at all 20/25 mph, the bike grinds bad, and falls out of gear.

all upshifts are fine, no matter how hard i run it. it just falls out of first when i let out on the clutch after a downshift.

 

[cyclecamper]

Probably the backside of the dogs are in bad shape. But sometimes a bent shifter fork etc. can caue similar symptoms.

Did it happen suddenly? Might even drain the oil and find one dog coming out the drain, happened to me on a Suzuki once (2-stroke).