We are the builder. I have interim lien waivers on almost all the subs on a home we are building. Getting the lien waivers took time and a fair amount of follow-up. Do I have to get final lien waivers? Does not getting a final lien waiver somehow invalidate what I have? I understand that to absolute certainty I need them but from a practical standpoint, I could spend weeks getting finals and not get much more gain. Steve Dabbs