AFG YS-11

Hi everyone, I was using AFG's YS-11 over at a friend's house, but we couldn't get the engines up without slewing into the air, and back to the ground. Theoretically, it's fully FSX compatible, but after trying exactly what the manual said, we couldn't get an engine up. Then we tried different combinations of the fuel levers, feathered/not feathered, throttle position, and other things. One thing I noticed however, was that in the air, the engines would start; I purposely killed them, and then followed the procedures, and they started. I wouldn't think being in the air would make a difference. Any tips? Thanks,