3mm always. 2mm is to thin and flimsy
Aerial depends on if you have one. I do but in this day and age don’t use it as use my phone.
Around the vents. Under them doesn’t seal the vent loop properly
To the edge or under I didn’t know was a thing I thought it just depended on the alignment of the wing and the bonnet. One of mine is under one is to the edge! But the wings are not straight and the bonnet not square.
Colour is black. Silver reflects the sun and gives glare
Rolled to the headlight join to add rigidity
Never seen rolled to the outer wing thought they only did flat.
