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One of the o-rings (head to barrel) in my vertical cylinder sprang a leak and needed attention.I took it to my local ducati tech and in a nutshell this what he did. We soaked the somewhat corroded head nuts with "liquid-wrench" for a few days and then after a lot of gentle and not so gentle persuasion,the nuts were free enough to take a proper torqueing.It's hard to tell just how far off the nuts were out of torque spec.But it is safe to assume that the heads were in a somewhat "floating" state.After the fix,it appeared that the leak was still there.But after a REALLY thorough cleaning in between the cylinder fins with a can of brake cleaner and compressed air,it appears that the leak is fixed.No oil drip after a really hard ride of about 100 miles.The retorque of the heads cost about $50,removing or swinging the engine to replace the o-rings would cost about $500.
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