944 Brakes onto Swing Axle Rear - HELP!

[slammedbay]

I'm fitting up some 944 rear brakes upto a late model swing axle box using the alloy caliper mount/hub carrier.

Once its all bolted up I'm getting some in and out movement in the axle (5-10mm), the bearing seems to be loose inside the axle/hub carrier.

I've currently got a swing axle bearing in there, is this correct or should I be using the IRS bearing from the porsche trailing arms?

Thanks

Ollie