Usually you can't install them backwards. Just because of physical constraints. If you somehow did, and there is enough room to do so, it wouldn't change how the clutch opperates. I think you have a linkage issue. Glad you sorted whatever it was out. Edit: In your vid, you shifted it without it grinding, so it's fine. Putting the clutch in while it's in gear will still spin the driveshaft because there is some frictional drag. The pilot bushing for instance. The wheels are free spinning so it's hard to tell. Can you shift into first?