Predator 212 won't start

[Cottonj]

I got a brand new predator 212 and after finally getting it mounted on my mini bike I rode it a few times and kept getting gas in the oil so I took it apart took out the oil sensor and gov I've never Owend or worked on a small engine I finally got it all back together now it won't start all the parts are still new I just checked the valve compression idk if I did that right but I put everything back the way it was I really need help can anyone help me and remember I have very little knowledge on any of this and most came from YouTube and Google

 

[Denny]

Did you line up the cam mark with the crank? Did you put the pushrods in properly, lash cap? Is the valve lash set properly. Float in carb adjusted properly? Why did you take an obviously defective engine apart instead of returning it under warranty?

 

[madprofessor]

Why did you take an obviously defective engine apart instead of returning it under warranty?

 

[Sambo2132]

Sounds like something with your cam or they put like no piston rings in it lol idk take it back if you can or open it up and do a rebuild there are like 45$ kits with rings and gaskets and everything on arc racing.