I am a small contractor that was hired by a consultant to do roustabout work to build a battery for the land owner. They are currently disputing our bills because they are referring price points from Oklahoma not Colorado where the work was performed. We did not provide any materials only labor but we covered some third party billing on their behave to keep the job moving. Do we fall under the 2 month provision to file a lien or 4 months? We want to give them sufficient time to make this right but want to make sure we are covering our company as well. Unfortunately today would be the day I must send the letter of intent if we fall under the 2 month category. Thank you so much for your time.