The plastic sliding bit on my hinge broke and so I bought a new pair of hinges. These look exactly the same as the originals although the holes are just slightly out of sink but not by too much. Having replaced the hinges I now cannot close the window - the window seems to be overhanging by about a quarter of an inch, if that and it looks like it just needs to be lifted up a bit. I have put the sash part as far as it can go into the top corner and everything seems to line up with the dirty marks left by the old hinges on the sash and I don't know where to go from there. Can anyone please help. Thanks so much