Paper ID S003 : Effect of keeper after MRI irradiation on attractive force

I evaluate this presentation clinically as an important and practical study.

Please tell us concretely why the large variation occurred in the attractive forces of magnetic assemblies?

The cause is considered to be the following two technical errors.
First, when the keeper is bonded to the duplicated lower non-magnetic table, a slight horizontal shift occurs between the keeper and the magnetic assembly.
Another possibility is that a slight displacement occurred when fixing the duplicated lower non-magnetic table with the keeper bonded to the universal tensile tester.

Thank you for your response. Although I understand very difficult measurements, do you find a good idea or way to reduce these technical errors after finished these measurements?