There's about 3-4 3w's floating around our feild and I have seen only problems,poor low and mid range and always trying to tweak and get to run right.All the DA's bolt on and run great right out of? the box.Are 3w's that hard to to tune?It seems that they all leak,also.I wish there was somebody around here to help tune one ,because 3w's are the laughing stock around here.