Attorneys in a class action plumbing defect lawsuit said they have reached tentative settlements with all but three plumbers and two builders. Of the more than 40 home builders, plumbing contractors, distributors and related parties sued after installing Kitec brand plumbing systems in the valley, only Sharp Plumbing, Classic Plumbing, Majestic Plumbing, H&H Developments Ltd. and LBM Development Co. Inc., have yet to reach settlement agreements.