So we have to reset our cambelt tension, which is another 'kettle of fish'. I have been looking into the belt tension issue (having set belt tension by feel on 2-valves since 1980..). To set the tension to resonate at 110 Hz is a bit of an issue. Of course there is a factory tool, or there is the Aussie (cheap) way.
I stress that I haven't actually done this yet - I am about to do my (36,000 km) valve service for the first time. The bike has only recently run out of warranty.. This belt tension thing has been written up on Ducati ms forum.
I have downloaded an Audio Frequency Meter, and have only to buy a "uni-directional microphone" to suit my PC.
I am eager to know what were the "mistakes" the previous posters made. The hose-in-the-hole sounds like a good idea, and obviously we need to mark everything as we pull it down - cam wheel position (none on there from stock, and anyway I have Ergal pulleys) and camshaft bearing caps.
I will post back here later, but I am off to Phillip Is. for ride-days, and then have 3 weeks in the States, so it won't be immediate. I have my shim kit from Mike at EMS, and 36 years experience of doing (mainly 2-valve) valve clearances. I'll let you all know how I went...