Does anyone have any instructions on how to replace the screen and LCD

This is a Sony Tablet S SGPT111GB/S. There seems to be a bubble of air between the glass screen and the LCD or it is a separation of the adhesive between them. I have located a replacement unit but there are no fitting instructions. Can get as far as the battery removal with existing Ifixit guides but after that I’ll be guessing, not a good way forward. Can anyone help? Photo attached showing screen problem, anyone else had this issue?