Alright everyone I recently bought a dirt bike second hand a few days ago and I think there's something wrong with the clutch. I started her up last night to take her for a quick spin for the first time and while the bike is going I tried to shift her in first and it felt like she already was but when I let out the clutch fully she wouldn't stall out or anything, when I Rev her up with the clutch still let out she'll start moving? What could this be