The whole point of the shim adjustability is that it can (needs to) be adjusted for every blade change. We go through this regularly on the Laguna, though not as often as we used to. There are only a few of us who actually use it and even fewer who use the scoring function.
I try to get as close as I possibly can, without getting chipping, which depends on the main blade too. It takes a few test cuts, but not that big of a deal.