Hi folks, I'm hoping you can help, please. I bought a house last year that needs a fair bit of work doing to it. One of the jobs I'm trying to tackle is the french doors. They have large gaps (top and bottom, middle is fine) where the main door meets the door that has the mullion(?) attached to it. The hinges are flag (I think!) and I read somewhere that you should be able to adjust vertically, compression and up / down. I can move the door vertically, however, the hex slot underneath seems to work the compression (shouldn't this be up and down?), but when I take the top cap off, there's no hex hole for me to be able to turn. Confused Anyway, I've posted a picture that someone will hopefully be able to see what I mean. Any help would be very gratefully received. Thanks.