Checked drain line to see if it was still clogged, that is not the case. Checked drain pan for buildup, found minor buildup and cleaned and treated drain pan. While pouring water into drain pan i noticed a corner of the drain pan seemed to be leaking. Showed my pour to ensure it wasn't overflowing. Still minor leaks. Checked for static pressure drop across the coil, which is only a .17. System had high superheat with appropriate subcooling, so charge is good. Recommend changing drain pan and txv. Customer approved work so pays are ordered and we will be back out as soon as we can to fix this.