I would definitely make a call if just inspected. Here's the revised Maine law I mentioned from Title 29-A:
29-A §1752. MOTOR VEHICLES EXEMPT FROM INSPECTION
The following are exempt from inspection: [1993, c. 683, Pt. A, §2 (NEW); 1993,
c. 683, Pt. B, §5 (AFF).]
<cut to number 9>
9. Registered in this State. A motor vehicle registered in this State displaying a valid certificate of inspection from another state or a federally approved commercial vehicle inspection program for one year after the date of inspection; [ 2005, c. 314, §9 (AMD) .]
I would call and ask as many states now have this reciprocity law.