Ok, so I'm not the only one having issues...? And it's not just the 210 either?
@janus: I didn't know Tom's car was suffering from those wear issues already and as well... but I can't say I'm surprised
@DCM: I talked about the driveshaft issues back in January with Chris Doughty - he stated the cracked head was indeed a manufacturing error relating to a problem regarding the fit of the parts and/or the temperature they were processed at (which in turn of course also relates to the fit).
The outdrives I think were changed somewhere in time: The first sets of long outdrives (that I bought myself) didn't have those smooth bearing seats. However, the wrong dimensions of the bearing seat are just down to tolerances bigger than the bearings will allow.