iPhone 4 logic board not sitting right

Hi guys,

I recently replaced the home button and proximity sensor in my iPhone 4 however when assembling it back together I can't seem to get the logic board to fit correctly.

In step 17 of the dis-assembly guide it states that the Logic Board needs to sit under the headphone jack standoff.

Sostituzione scheda logica iPhone 4

I can't for the life of me get it to fit correctly however. Everything else seems to fit fine (I've dis-assembled it multiple times) and nothing looks to block it. The top right hand side of the logic board sits above the circled metal bit when I put it together, causing the Wifi antenna and back case to not fit.

The proximity sensors don't seem to be in the way and the other parts sit flush against the case.

Any idea on what could be causing it?

Thanks