This approach seems counter productive. It casts doubt on the relability of your work. In most states there is an implied term in every contract that the work was performed in a competent and workmanlike manner. It would seem that it would make it harder for you to collect your fee. Your approach may give rise to a defense that you have violated this implied term.

If your client has used your work... in effect it has implicitly agreed to pay you. It has  few if any defenses. The work product remains your property until the client pays for it. There are remedies at law and in equity to assert your claim for payment. The biggest problem exists in waiting too long to initiate collection. In the current climate title companies are dropping like flies. If there are no assets to pay your judgment...well, you can not get blood out of a stone.