We provided engineering calculations under a contract to receive payment 30 days after submitting deliverables (mainly calculations reports). Contract date: April 14 Delivered Calculations: April 20 As of today, May 28, we have no received payment. We intend to send a notice of intent to lien, only if such notice will represent a feasible legal action. If under present law we are disallowed to file a lien because we did not include a Preliminary Notice within the 20 days of our contract signing, then the notice of intent to lien will have no bearing.