Fixing switch on g703?

I've read the guides here and on other sites on how to repair your double-clicking switch.

However, this model is tricky to get the switches out of the casing.

All the switches in the cover, and not easily removable as they are covered by 1 solid piece of plastic with no screws or releases.

I have no idea how to remove the left or right click switches without possibly damaging them.

Every screw is removed and I removed the side buttons, thinking they hid access to removing the plastic cover piece over the switch. No luck.

Any advice/suggestions?

Here are some pics.

Thanks