I ordered a Mouse 38 kit from Madcow a few weeks ago and when I received it the fin slots were not quite equally spaced and the body tube outside diameter was greater than the nose cone diameter. I contacted Madcow and they very quickly sent out a new tube. Just today I received it and the fin slots were perfectly spaced and the diameter matched up with my nose cone. Thank you Madcow! Will definitely be ordering more from them in the future.