Just hoping someone can clear something up for me.

The manual says wheel arches must be turned in or have radius of 2.5mm. Yet it also says that class fibre panels must have 1.5mm radius. Which applies to front mudguards?

I hate trim so I'd rather build up my mudguards to be able to radius them 1.5mm.

The easiest way is to trim them, then remove after IVA

I will second that trim them then remove worked for me simples

Yeah as above, just trim them for the IVA and then the trim can magically fall off after the IVA, will save you a lot of headaches and time doing something the hard way.

when I made mine, I made them 5.5mm thick at the edge and rounded it off before painting. Job done.