Hi, I accidentally got my phone wet, left it in my coat pocket and threw it in the wash. The phone is fine, but I have some wet spots on the LCD. I am going to replace the screen with an OEM LCD. The screws on the back of the case (back removed from phone) are smaller than the precision tools I have for my glasses. I cannot lock onto the screw with the phillips head provided. What sizes and types of screwdrivers will I need to remove the case to replace the LCD?