10 months and counting, we have the Cupronickel cores in the 16-71 blowers, they were saying that the raw materials were not coming in, then it was quality control issues, and well we can send one, and now we are waiting again on who nows what. we ordered 6 and have 1 so far. we will have 8 motors built the same at the lake so we are doing our own R&D, so far we have one set that had a 1/2 season, boat flipped, went to the bottom, brought up, pickeled, cleaned up, and rsssembled and ran all last season with no problems.