Hello, we completed a few projects in the state of Montana (labor & material) in April/May of 2017. However, we have been replacing some of the components and have provided additional labor and material to the customer since that time. At what point what the lien deadline start? I understand we have 90 days to file from last material shipped/labor provided, but we aren't charging for the material/labor from late 2017/early 2018. We want to be able to place liens on these projects. Thanks, Amena