I have been working time and material on a verbal contract for several project addresses for the same client for several months. He has always paid me within a week or so on the same terms. Note that the first project I did for him I do have a signed T&M contract with a prelim on the back of the contract. He has now gone dark and he is outstanding on the following: $2,768.46, sent 6/17 $3,600.00, sent 7/15 $2,758.74, sent 7/16 Does it make sense to send a prelim in this case or do I just have to sue him?