Try this mouseup=pipeswitchweapon 8 | pipeswitchweapon 8
Here is my side mouse button . First click brings up rockets second click brings up flak, may have that vice a versa.
Mouse5=pipedSwitchWeapon 7| pipedswitchweapon 8
My other side mouse button brings up shock then lghting gun. Use the middle mouse to scroll to the odd stuff.
Again like I said. If you don't want the next weapon don't click the button. First click always brings up rockets , why not have second click do something. When you click again it goes back to previous click. So all you get is rockets and flak . What more could you want.
Although the downfall to using scroll up for this is getting to the rpg weapons you need a way to go up or down a weapon set.
