I hope you had the surveyor to stake the boundaries as well. This may
help in any discussions you have with the neighbor.

Before speaking with the neighbor, I'd tie a line between the stakes,
so the conversation with the them, would illustrate the surveyor's
findings, while trying to calmly come to a resolution...It may be
easier than you think.

Myrl Jeffcoat
http://www.myrljeffcoat.com