My door striker plate is loose, any tips?

[Don (Ireland)]

My Drivers side door striker plate (U shaped bar on B pillar that door latches onto) is a bit loose. I have tightened up the 2 torx bolts but no matter how tight the plastic cover still has some movement in it that is causing the door to rattle. I thought of switiching it with one of the back door plates, are they all the same? If I remove it are there any thing to bear in mind given that the interior light switch is built into the plastic cover.....?

Thanks.
Don
95 525iA

[Bimmer Nut Ed]

http://www.bmwe34.net/e34main/maintenance/Body/DoorRemoval.htm

Also, Koala has a reinforcement plate which worked well on my door.
http://www.koalamotorsport.com/mall/doorbrake.asp