As far as I recall, Western's "due date" is 1 month from when you receive the secondary. This is a popular policy from a few different schools, though I don't know how closely they could monitor this.
In any case, just get it done. Amber DeGelia, the admissions counselor, is extremely helpful.
I want to interview at Western, and
I just found out that my application was delayed in processing thanks to a professional eval that was never sent in.