Thank you, you're right. So you think there are bolts inside there as opposed to screws? I am unable to see what lies within! Do I need to adjust both?
Hi everyone and thank you in advance for any help you can give. I have an issue with my patio door where the door no longer fits snuggly into the frame with the gap slowly increasing from top to bottom (please see photos.) I have looked at a few online videos where they indicate adjusting screws...