GC paid sub for work he did, he believed he should have gotten the rest of $$ for completing2/3 of work, GC said he did not perform 2/3 yet, so will not get finale payment. He had a fit, she offered to bring in an inspector to decide if he completed said 2/3, another fit and said no. He is also claiming in lien materials not there, but not telling of his improper use of materials and GC having to purchase more materials. Also seeking more monies for travel and lodging because he thought he should get more but was paid the agreed upon amount. And now he says he should get the monies for having to travel to site and unable to do work because no materials were there to work with and could have taken other jobs. Does he have a valid lien?