OK, I'm using Adobe 7.0 to open and read pdf files. Maybe that will help.I just got my Tikka manual out and compared it to the pdf file from the link I provided. The English instructions in the pdf file leave out a couple things such as sighting in procedures and and instructions concerning the T3 tactical, but they do provide insructions for adjusting trigger pull. I will try to explain to you how to adjust it.

Remove the action from the stock. Using the allen wrench that came with your rifle, turn the set screw counter clockwise to lighten pull or clockwise to add weight. It is pretty simple, but I was hoping you could see the illustrations to help you out.