I sent an email to AHPC about this, hopefully they'll have an answer.

And to Wouter I have to say that my error margin with bathroom scales is three times smaller that actual mast weight difference that came out wearing die (which is acceptable by you), ínternal DH and mast foot has always been included in both numbers (and said so). Also now that mast was re-measured it was totally dry, previously it could have easily have some ice attached here and there even though it looked not to be the case.

All I'm getting at that we have different masts here in Finland than rest of the guy's out there (15+ measurements) and you don't believe that it is the case and thus your are trying to question my reliability or you try to say that there is no difference. Why is that so, are you personally involved somehow to this whole issue?