I plan to get started cutting into the pile of stickered timber in my yard in the near future but one question has consistantly bothered my brain:

The timbers are roughsawn and therefore will likely vary in width/depth from piece to piece. Where a girt or tie joins to the posts I expect to have to adjust either their length or plane the area of the posts where the timbers join to a consistant dimension.

Does anyone have any advice on the best way to go about this?