The strut brace covers the D2 allen key to adjust dampening. This is something that would only effect someone using the car for a track event or some situation that requires you to constantly manipulate the Dampening rate of the suspenson. adjustment of ride height and strut is a piece of cake. This is the same case as the Sonic S1 coilover you mentioned. The location of the dampening adjustment is exactly the same as on my D2 coilovers. These coilovers are application specific they are made for the 335i coupe specifically they have different option i choose the basic set.
Again for everyone else that isnt trying to knock my parts or negatively comment these coilovers ARE very easily adjustable. I can raise or drop my car in 45 min or less believe me i have done it plenty.
Thanks for your negative comments rob1024