2014 rzr 570 hard start

I have a 2014 rzr 570 it’s hard to start the first time you start it it can be a 100 degrees out side and it’s hard to start I mean having to give it some throttle like its starving for gas I replaced the whole throttle body and I checked the fuel pressure changed the spark plug running out of ideas now after you get it started you can shut it off right after it gets started and it pops right off like it should don’t even have to let it warm up before you shut it of. I wouldn’t be worried about it but sometimes it takes me along time to get it started any ideas?