NNN tenants acting like residential tenants

[Amy A.]

I'm under contract for a strip mall and expect to close this week.  This is my first commercial property, but I have been managing residential tenants for almost 13 years.  I've examined the leases and it's clear that the tenants are responsible for maintenance within their units, as well as windows and doors.  However, I've had some strange complaints about the current landlord not fixing the windows, lights, etc.  Once asked me if I would replace her toilet if it broke.  Is this a simple case of the tenants not reading the lease and the current manager being a push-over?  I intend to improve the exterior of the property and treat the tenants well, but I don't want them to call me to plunge their toilets or replace their light bulbs!  Am I wrong?