After a quick skim through this page it appears that you don't know how to calculate percentages. For example you claim to have calculated (table 2) the binding energy for lithium as 43.71 compared to a measured value of 54.7. This should be a percentage error of

100%x(54.7-43.71)/43.71 = 25%

You claim that the error is in fact 4.02%.

What is happening, and why should we trust the rest of your calculations?