I have a 2006 plus 4 that has had an aluminium radiator fitted - I suspect sifab which seems to be good with no issue. However the steel tie bar that goes between the inner wings and has a bracket to which the top of the radiator is attached has some surface rust. I would like to remove it so I can clean it and paint it before refitting it. If I remove it do I need to support the wings in any way and do I need to measure the space so I can refit it exactly or will the radiator keep the spacing correct and just a matter of replacing the rod and tightening the nuts

Any comments or experience would great