What about the T-Bar thing? I don't want to break anything.
From the workshop manual for the 4200 it looks like there might be securing bolts under the vents for the rear passengers. I've pulled out the vents but maybe it needs the plastic outer housing removing?
Can confirm access is gained by removing the vent sleeves. I wasn't able to do this without breaking some plastic tabs though, I think they are meant to go in once. I look forward to the future rattles when I have it all back together!