You are shown two pictures: one of a very poor crown preparation on a cast model and another of a poor silicone impression. What is the BEST course of action?

When both the preparation AND the impression are substandard, the correct course of action is to remake both — improve the preparation first to meet proper criteria (adequate taper, retention, resistance, margin quality), then take a new impression. Sending a poor preparation/impression to the lab results in an ill-fitting restoration and wasted laboratory fees. The lab cannot compensate for inadequate preparation or impression quality.