Hi A useful site .Ducato gearbox question

[benno]

Hi. This seems like a very useful site. Can anyone answer this. I have a 2002 Ducato based Rapido motorhome with a 2.8 JTD engine,that has covered only 18000 miles. I have just had a new clutch and the gearbox rebuilt due to, initially ,chattering of gears ,mostly on the overrun then, following the first full rebuild where second gear was replaced, after only 200 miles the box let go again and sounded like a bag of nails,although all gears worked but very noisy until the clutch was deperessed. Eventually replacing the 5th gear ( not an unusual problem it seems) all now seems fine except for a slight chattering when in neutral which again disappperars when the clutch is depressed. Is this common or should I still be concerned about the gearbox/clutch. I hope not as we are just about to leave for Italy