Love the REP, myself. Never noticed missing top hinges for the engine side panels. Perhaps I was too busy flying the aircraft.
By the way, regarding the engine quitting all the time... don't bring the throttle back all the way. It's allegedly a feature, allowing the aircraft to slow quicker on rollout for those bush pilots flying into short runways: https://www.aerosimgaming.com/forums/topic/88-low-idle-rpm-stops-engine/
This post specifically touches upon it: https://www.aerosimgaming.com/forums/topic/88-low-idle-rpm-stops-engine/?do=findComment&comment=259