Just to add confusion to the fussion. Check the bridge.

Check the warp on the guit- face....you are looking at a lot of torque with high E.

Check the Humidity - of the 80% summer and 20% winter.

Switch out the current strings for another set...and you can begin to focus on the possible problems.

Sincerely,
Gargoyle

Currently, I am going through diagnostic "hell" regarding another esentila por mi via loco.