With the original crossbrace standoffs that were included with the VBC L12, the crossbrace was too low to be able to run AE springs on the side links without a significant amount of preload. If you want to run the springs with no preload, you needed to shim the crossbrace up by about 2 to 2.5 mm, depending on the springs you were using.

VBC might have changed the standoffs since then, but I highly doubt it. You are a better judge of how much preload you have now and whether it is ok, but my advice is based upon past experiences with the car and trying to get the car so I could run no preload.