My 2 year old 27hp Kawi Lazer has been weeping antifreeze from the radiator hoses since new. Last week I had my dealer install 2 new hoses. After running it a few hours I noticed both hoses had a small stream of antifreeze running down them. I was able to tighten both clamps a half turn. End of problem? NO! I just got done mowing my own lawn and after an hour there is the stream of antifreeze running down one of the hoses. Can't get the clamp any tighter. Is it possible the radiator connection is not as round as the hose and thus not a good fit? Help me out on this.