@Intrepid,
We had carpenter contractors replace the fascia around the apartment buildings. The owners made it clear that all bad wood should be replaced. The contractor said, in the presence of the entire staff that he did not believe in replacing a piece of a board, but the whole thing. The owner stated that this was what he would insist on. After the initial bid was completed, additional bad boards would be replaced for additional charges. Well, there were two serious problems. The owner said "just the bad wood." That leaves room for interpretation. Second, the carpenters insisted on replacing four foot lengths of boards, despite our protestations. (The owner lives in California.) They insisted on caulking numerous board ends instead of taking out the bad wood. What you said about too much caulk - Many corners appeared to be molded caulk, not wood. So, now, they have to go back and redo much of the job. The guy wants to charge for replacing the four foot pieces, which he already charged for. (The contractor insisted that he never offered to change whole boards).