This is my reciever holder for the Multiplex RX 7/9 DR M-Link, it`s glued in the airframe with double sided tape or super glue. None of my reciever ever slipped out. 

Printed in the position which is shown in the Cover, with 0,4mm nozzel and a layerhight of 0,2mm. I print them without support, but i you can do so if you want.