The classic G-Shock models are built tough, but occasionally the LCD can become mis-aligned after opening one up, leaving a crooked display. This issue seems to occur mostly on the 901 and 240 modules. G-Artistic has posted a simple guide to fix the problem. The usual cause for the LCD to be depressed on the right is an issue with the buzzer electrode part on that side. A little double-sided tape seems to do the trick to get the LCD back to being nice and flush with the watch face.

Read the full article (English translation)

LCD depressed on one side	Double-sided tape to adjust height