I don't have this problem, but I would say you will have to pull the engine and would require at least a week in the shop from your Ducati tech. For sure this is not a big deal...tear your engine apart and redo all seals, gaskets, etc. You could pretty much run without coolant for a week or two so wait till then . Jus sayin.
You certainly don't need to pull the engine. It is quite involved but you can actually do it yourself if you are out if warranty. Here's how.
To change the cam cover gaskets requires for the horizontal head at least, that the radiator be removed (four bolts and two connectors) and for the rear cylinder head, the fuel tank and left hand heat shield. You can do this in less than an hour if you know what you are doing.
The quickest way to fix the coolant leak is to undo the three bolts that hold the thermostat housing to the engine and the two inter cylinder hoses at the cylinder head ends only and pull the thermostat housing out with both of these hoses attached.
Before replacing the thermostat housing I would recommend buying either SKS or Samco's hose kit. Junk the Oeitiker clamps. Attach the hoses to the thermostat housing in the same orientation as the OEM hoses and tighten the new clamps until you can no longer rotate them on the hose plus one more full turn of the screw. (Try to orientate the clamps so once in situ you can access the tightening nut with a small ratchet 8mm ring spanner in future if you ever need to nip them up). You don't need to go crazy as it's a plastic tube you are squeezing the hose onto, which will distort and crack if you do.
Replace the rubber seal on the thermostat housing with a new one and bolt it back into position using a mild thread lock to around 10Nm. Attach the other ends of the hoses at the engine cylinder head ends using the new clamps and tighten as suggested.
Remove both cylinder head cam cover plates and using a new 2013 onwards spec gasket smear the approved sealing compound over the mating surfaces as recommended in the workshop manual (WM) having thoroughly cleaned off any old residual sealant. Tighten the covers to the specified torque. Replace the LH heat shield on the vertical head, fuel tank and seat. Re-attach the radiator assembly and re-connect the aft end of both hoses to the thermostat housing. Refill the coolant system start the bike and check for both oil and coolant leaks where you disturbed those parts. Job done.
Note that you will need to loosen off the LH electrical housing box to gain access to the thermostat housing and you will find it easier if you remove the clamps holding the front of the two left hand hoses to the radiator. If you are changing to Samco hoses, you will need to remove these anyway as well as replace those on the RHS like for like with those in the kit.
This sounds like a big job and it is if you are easily intimidated at the prospect but it is achievable and with all the parts and a few basic tools to hand can be happily completed in a few hours by one person, though I would recommend you ask for help when lowering the radiator assembly out and whilst you are replacing it. I will have a full how to on this, up on my website soon for those that are interested.
