Hi Everyone, I picked up a used P3A and the controller makes noise when it moves around. Also, the home button seems to have detached and slides around. I have not flown the quad, but I wanted to see if the controller should still be usable without the Home button? My P1 did not have such a feature, so I'm assuming that I can work fine without it. Of course, I cannot explain the "other" pieces floating around within the controller. If it starts up, passes prechecks, are there any other checks that I should make before sending her up? Also, I noticed that the case has clearly been opened and the stickers have ear marks in them. This may not be a huge deal as a motor or something may have been replaced, but it was not mentioned. Thank you in advance.