Hey Lynda,
Very interesting...I will leave the interpretation of treasure symbols and maps to people on here that know what they're talking about because I certainly don't...the only thing I would add is that if we are talking celestial navigation, it's not just declination that will change.
For example, if you go to a certain spot on say July 1st of every year, and sight a star, it's declination ("latitude" in relation to the celestial equator) will change as you said, but it's right ascension ("longitude") will change slightly as well...so there has to be more than just an angle from the horizon at a certain date and time, or the map won't be very good for anything...maybe I'm not getting what you're talking about, but the pattern you referred to "repeating over and over" actually repeats only every 25,000 or so years...not every year...(and that's not even a given due to gravitational effects on the earth's axis due to other planets, etc, but it is generally true).
Granted this change occurs very slowly, is there anything on the PSM's that account for this? Take care, Jim