iPhone 3G housing replacement sim problem

[Zoticon]

I recently changed the housing on my iphone 3g and the hole for the internal sim ejector component was not properly drilled out
but i managed to push a screw through it and everything was good but recently the internal component got loose and i could hear it rattle inside the phone
so i opened it up again and screwed it back down but since then it has been a slight bit elevated and when i put an empty sim tray, that goes in fine but with a sim it hits off the component and wont go into the slot, and if it does, it wont come back out until i use some force and dislodge the internal component.

any ideas on how to fix it?
or should i just get a new case?

 

[chargit]

unfortunately you bought an aftermarket back. they dont have the holes drilled. take it back apart and remove the motherboard and try it again. if no luck get a replacement but dont buy another cheap one. lots of sellers lie about their products being oem. just make sure the holes are predrilled and you will be fine.