Tip: when trying to butter, turn on camera lock and point it at the bottom of your aircraft so you can see the gear. It makes it so much easier to butter and to keep on the runway. Also, reduce your throttle until it says landing speed. For medium airliners like a320, 737, and more is usually 50% or maybe a little less. Another thing you want to consider is a good approach. Make sure that your straight with the runway way before you land.
