something wrong

hey guys
I just did my slug kit and hunterworks sheave
not the first time I did one a year ago on my old grizz
but now something a muck!
when in my back yard I tried it out but now it seems to stay in gear when I put in gear it leaps forward and dies tried both reverse and forward then when try to start in gear its like starting a standard in gear with clutch out
did I put the one way in backwards ?