[Nexus 7 General] dilldoe:
for $5 or less!

what you need:

Double sided tape (mines was about 1/32" thick)

Electrical tape

Knife (not shown)

(Since I had these already, the fix was free for me)

Open up your nexus 7

and put the tape as shown:

On the right side of the back (where the buttons are) cut about 1/4" of tape so you'll have a strip that's 1/4" wide and 1" long (the roll of tape is an inch thick)

Put your cover next to the nexus and trim the tape so that it will not touch the 'grooves' on the frame (I've marked it in red). and stick them to the back cover just below the level of the clips.

This will get rid of the 'creaks' & some of the sponginess on the right side.

click for close up

[1] This is what's cause the bulge on the left side. The border around the wifi antenna is hitting the 2nd screw. So take an knife and CAREFULLY trim it flush to the back. You don't have to trim it all, a good 1/4" will do. (note. I have a washer under the 2nd screw to fix the screen lift)

[2] the tape on the left side over the Touchscreen cable is what cause the 'creaks'. So use some Electrical tape and cover this area up. MAKE SURE NOT TO OVERLAP. You don't want any extra thickness in this area, you just want to hold down the existing tape from moving.

(I don't have any tape on mine since I don't have noise issue there)

Now on to the battery. This is what cause most of the sponginess and some of the creak on the right side. If you tap or press where the 'X' is on the back cover you'll know what I'm talking about.

Use your finger and feel where the battery ends and the wire area begins (I marked it with a blue line to show where the battery ends) This will give you an approximation on how long your double sided tape will be. From the frame to the battery.

Put your cover on top (as shown) to figure out how WIDE the tape will be. You want to leave a gap for the foam on the back cover (marked in red)

You might have to add another, smaller layer on top of your tape. If you push on your double sided tape and it goes below the frame, then you need to add that smaller piece to make it flush to the frame.

Here's a close up of what I'm talking about.

I also added a large piece (the size of the empty slot on top) from the motherboard to the top of the battery. Since the metal frame ends half way, this will make up the gap.

Put your cover on from LEFT to RIGHT (side with the buttons on last)

Now these are the spots that were giving me the most noise and sponginess, yours might be different. If you still hear a noise, note the spot and see if adding tape near that area will help.

BONUS TIP: If a game/app requires you to use it in landscape mode. First hold it in landscape mode on the right side, so that the camera is on your right instead of your left. Disable Autorotate screen to lock it in landscape mode. Now open your game/app and it'll run on the right side instead of default left.

WHY DO THIS?

Like most I had screen lift, so I did not want to put added stress on the left side of the screen.

Since the right side just have battery, I think it's also structurally more sound than the left where all the electronics are.

Also, since the processors are on the left side, it gets pretty toasty when running graphic intensive games, so holding it on the right side will keep your hands cool and allowing the heat to dissipate better/faster without your warm hands in the way.