Kent! ...miles away, Derbyshire
I wound AK's down to a lower setting when fitting to give me more room, then back up to 50/40 as an alright start point, but may have adjusted 5 - 10 mm, at the most, since then.
Each plastic arch is a doddle to remove by HAND (no cutting!) Just drill off the heads of the three rivets, and loosen/remove by hand, pulling mostly from the lower wing area (where the holes are on my bottom pics) You then need to replace (steal!) the 'bump' strips on the wings from a 3door non-gti to cover the holes, carefully removing the long rear one with 'GTI' written on. Pointless explaing it all cos its really easy.
I've got some tasty side skirts to go on, I got the pair for £10, but I like the look with no side skirts at all. Smoother.

I'm gonna paint em green, then see what they look before I properly attach them.