so if there is a properly filed mechanics lien on my property and I have negotiated with the contractor to file a release of the lien for a final one time payment, do I use the California Unconditional Waiver form? And if so does the contractor sign this first then go to the county recorders office and file the release of lien? what if he doesn't and has cashed my check? does he usually wait for the check to clear then files the release of lien? who pays for the court filing of the release of lien?