I hate when they do that.
I "think" the RM-30 is the same but simply don't know for sure.
You might look at similar numbered models. Maybe there's the "magic connector" between assembly and individual parts.
I certainly wouldn't worry about being up to 0.5mm too thick. The "thicker" you go, the more you increase dish, which results in a slightly weaker wheel.
And a bit harder to slide into the DO's.

EDIT- IF it was working fine before, don't worry about it.