quark model

I appreciate very much the modesl you provided for a 64 aac caseinmacropeptide.
I am a new user of quark, not working in protein modeling. I would like to know the following:

1- what criteria I have to use in order to select between the five models you provided.

2- What is the probability of the model on describing the real structure.

3- The caseimacropeptide is the 64 C-terminal part of K-casein. Can I match the model with this K-casein derived peptide?

4- Also I would like to know the location of N-terminal aac.

5- Is it possible to show all aacs location ?.

Thank you very much