I have googled etc talked to mechanics etc. i have a few service manuals and they all just talk about lining up marks.
The Husaberg mechanic tell me that it is not something they can explain over the phone but yes indeed there were some that did not come with timing marks but there was a diagram on how to do it but no one seems to be able to find it. I will contact another dealer and see if I have the option of buying new gears that have marks on them and maybe that will be the answer,
Where in the site did you look at pictures to determine they are different?