When fitting the LCD I do not recommend sticking the LCD to the Lens as per the original SP. This makes it too difficult to align and to change lens in the future without replacing the whole LCD.
Use double sided sticky pads (preferably around 2-3mm thick) and position them on the LCD (Not any part of the LCD PCB or ribbon)
Remove any plastic on the left side of the LCD part of the shell. Some shells have only two small plastic posts here. Others have plastic running all the way down the left side.
Place the LCD as far to the left and top as it will go and ensure it is secured in place