Also did You buy a complet kit or the surfaced plates only? My bike when I got It had the compleet wrong cluth kit in it the steel plates were the wrong thicknes
Hope these help mate
Gear selection problems can also be caused by incorecty installing the hub bolts to the wrong tension. On some models of bikes, once the hub bolts are down tight they should be backed off a quarter a turn or so.
softer spring set up in the clutch, Some riders do this to make the clutch leaver less hard to pull in. Although it could make the clutch more prone to slip
Possable causes are miss adjusted lever or arm worn clutch & hubbs pressure plates & springs or a wrong gear oil would make the plates stick