Do yourself a favor and do a good job here, or you will probably be doing it again.
Every AMD product I have ever seen, flown, or owned, had the same jokey retract mounts, and you are better off fixing them first thing when you open the box, because they are underdesigned, using low quality materials(like double layers of lite ply!) and poorly assembled. Seems like it's a price you pay for these cheap airplanes...I can live with it! But it's easier to deal with right out of the box than after the plane is built. Retracts through the top of the wing, or tearing out on a nice soft landing is NORMAL, not unusual!