Hello, I live in CO and recently hired a GC to finish off my basement. He will be using subcontractors for some of the work. I want to make sure I protect myself from possible lien filing in the event the GC does not pay his subs. The agreement we entered was that work would be performed over a 6 week period. I would pay the GC directly in the amount of 1/3 up front (this payment I have already made), 1/3 at the midway point (this payment that has not been made yet), and the final 1/3 upon completion of the job (this payment also not made yet). I'm unsure which lien waiver to have my GC sign. It appears that Partial Conditional would make the most sense since I am making payments throughout the job instead of one final payment, and some of those payments have not been made yet. I'm unsure how this affects the first payment that I already made, though. Also, Colorado does not have a state mandated form to use, so can I use another state (such as California?) as a starting point and modify it? Any guidance would be appreciated. Thank you!