Constrains on left eye - Cheshire Cat (2 nfw models)

In a model run for 2 nfw models, the delens relens result of image B1 is not satisfactory

In case you forgot where it is:

model delens relens results look like this: There is a "leak" to the right hand side.

While in 1nfw fiducial model : it produces a satisfactory result.

The satisfactory one has the critical curve of

While the bad one has this:

In most 2 nfw models, the best fit position of the left halo is below the left eye, which caused the critical curve links up between cluster members below and the left eye. Consequently producing a "mirror" like image in the right side of B1.

This founding constrains the position of left nfw halo has to be somewhat higher than now or it has to contain less mass. more attempts need to be done before any solid number can be drawn.