La Land Surveying

To any land surveyor. I am in the process of purchasing a piece of land. The problem that I am looking at ,the survey marks not in agreement with tax deeds on my property and the neighbors property. My deed and the neighbors are both in feet. On one corner of my property, the marker can not be found. On the neighbors far corner of her property it is there in cased in concerte. The marker is a one inch solid steel rod. Eighteen inches long. In order to get my missing corner, should I be able to just measure the frontage on her property, and get my corner marker? Her frontage is 82.5'. The backside of her property is the same as the front, 82.5'.The preliminary survey marks are seven feet off of said measurement. Would this be an accurate way in which to set boundaries for my property? She has spoken with me and fully agrees that where the measurement that I have measured, and what the deeds say are in agreement with each other. I have spoken with the surveyor who I have hired for the survey. He has two men working for him. He says that could be the actual boundary or it just could be the corners. So the survey is still inconclusive. If the property marks stay where they presently are, could the neighbor and my self mutually resettle the property marks that on are each others deeds before a lawyer to set this matter straight? Thanks for your consideration on this matter.