I am a new member to the forum. I have owned a Bobcat MT55 mini-track loader for about 3 years. It is powered by a 3 cylinder Kubota diesel. I have had 4 mufflers crack due to vibration in less than 800 hrs. I have talked to several other operators concerning this problem. Some have had similar cracking problems, others have had no problems. Does anyone have any similar experience with this type of problem or can anyone offer a course of action to minimize or eliminate this problem?