I did this one, replacing not the LCD but the lid itself. I thought I was being extremely careful with the LCD Bezel, but I broke the LCD in more than one place in the process of removing the Bezel. The rest of the job was manageable, but breaking the LCD was a disappointment.
The tiny cover/bracket seems to hold this in place securely, so no glue should be necessary. Did you forget to replace the cover in step 16?