I really need you advice- Edward. I suspected for some time now that my wife has been cheating.The usual signs; phone rings If I answer the caller hangs up, going out with the girls a lot and when I ask the names "You dont know them". I try to stay awake to to look out for her when she comes home but I usually fall asleep. Anyway last night I decided to check on her. Around midnight I hid in the shed behind my tractor to get a good view of the whole yard, when she came home from her nightout with the girls, when she got out of the car she was buttening her blouse which was open,and she took her panties out of her purse and slipped them on. It was at that moment I crouched behind the tractor I noticed it. A hairline crack in the manifold right where it meets the exhaust. Is this something I can fix myself or should I take it to a main dealer?