Yep, that's just the problem that I had the week before last, when I put my Ami into a tower. I used the same fix Castellan suggested, cutting down a 25 mm spacer to 17.5 mm. I used insulated M4 spacers and an M4 screw fits through the existing holes just nicely. M3 spacers would be just as good, but you need insulated spacers because of the adjacent tracks.
In my case it fixed an intermittent contact on the long mobo-CPU connector.
tony