Hey there i couldnt figure out how to change an individual item's weight using this mod and it seems to be the only one out there. Could you add a brief explanation to the description on how to use this mod?

Ofcourse. Unfortunately modifying the individual weight of each item would take an amount of effort and time that is beyond the scope of this mod. Instead it allows you to adjust the carrying capacity of the rocket itself, so it can carry more of every item. Hope this helps, and have a nice day. :)