Is it worth the chance on a used guitar with this modification?

[NJ Tom]

I'm considering a used J-45 that has a 'Bridge Doctor' installed. The guitar has a brass pin installed on the G string only.

 

Is this some kind of hocus-pocus modification, a solution in search of a problem? The price of the guitar is right but I have reservations about the value of this mod. How easy is it uninstall by the average person with no luthier skills?

 

http://www.stewmac.com/Luthier_Tools/Tools_by_Job/Tools_for_Bridges/JLD_Bridge_Doctor.html

 

Thanks in advance

[davenumber2]

The bridge doctor is typically installed due to excess bellying of the top behind the bridge. I'm guessing it was installed for a reason and would be hesitant to remove it.

[seamonkey]

the seller explains the reason for it, and i haven't been able to find a reason to think he's not being honest. this is such a great model