Since you already copied the "rep" folder from BF2modtools/Assets, you can just go back in your data_ABC/side/rep folder and make changes to the jet Trooper the same way you did with the rifleman and then munge your side "rep" again.
Everything looks OK, it should work.
Originally Posted by wazmol69
is it possible to edit a mod that i have downloaded and is there a way of getting my sides to work on an allready created map? thanks again.
I guess if you have the "source files" for a downloaded mod then it is possible, but you would need to ask the creator for them.