I have a oem phantom 3 hard shell backpack. I have added a camera gimble guard that fits in the lower part of the landing gear. My problem now is that it sits high on the styrofoam and I can not close the backpack. Can anyone tell me how to cut the styrofoam so that the P3P with sit back down in the backpack? And what can I use to cut through the styrofoam? Your help is very appreciated, thanks