I got a new shift lever because my old one stripped and haven't tried the shifting out yet on the new rebuild. I did today and am pretty worried, the bike shifts into 1st fine but after shifting up as in 2nd it doesn't engage, when I shift up again to 3rd it just sounds like a gear or something is stuck because it clicks when the rear tire spins. shift up and same things as 2nd, it doesn't do any thing. sometime the shift lever will get stuck in an upright position, really weird. I took the side case off but cant find any issues, am I going to have to split the cases to see the tranny?