Xp 900 will only start when giving it gas. HELP!!

I have a 2011 rzr 900xp and just the other day when I was riding it jumped timing and shut off. So today I lines thy flywheel up on its mark and set the cams in time and put it all back together. When I first try to start it you can hear it try to fire alittle bit but then it just cranks, but if you give it some gas it will fire up and run very rough and dies when you let off the gas. I’m kind of stuck on what it might be. I am going to try and put some new plugs in it tomorrow, but I was wondering if I might need to make a full rotation with the flywheel in case the crank might be off or somthing I’m not sure how many teeth It jumped. Any help would be greatly appreciated!!