I have the same problem. Mine is due to an impact with a large rock on the exhaust crossover tube, but that being said it is very difficult to get it to seat back properly. Also, there is no gasket at that connection, just metal to metal contact between the manifold and the down pipe. This is a very poor design if you ask me...
'08 DETN8R Yellow Unlimited Rubi
6-Spd / Soft top / Power
R.E. Modified 3.5 Super Flex Kit to 4+/Ft. & Rr. U-joint driveshafts/Full Traction Rear Adj. Trackbar/Custom Ft. Heim Joint Adj. Trackbar/Rancho 9000XL shocks/Yukon 4.88 Gears & Superior Rear Axle Shafts/37" Pitt Bull Rockers on Custom Allied Beadlocks/Poly Perf. Rock Sliders/Shrockworks Mid Ft. & Rear Bumper/Custom Trans. Crossmember and Skid/Custom High Steer with PSC Hydro Assist/Plumbed Warn PowerPlant HP/Cobra 75 WS XT C.B./Bully Dog Programmer/Custom Exhaust/Dual Optimas/48" X-treme Hi-Lift Jack on Custom Rear Swing Away Carrier/...
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