Headlamp mounts.

[Enoch]

I have just about finished my chassis now, I only have the headlamp mounts to do and a bit of tidying up. My question is - how have people made the headlamp mounts IVA friendly? It seems to me that they would have to be made of at least 5mm thick tube to get an acceptable radius on the bottom edge. I understand that sticking a bit of trim on there is not acceptable any more so how have other builders got around this? Your thoughts would be appreciated....
Enoch