While welding lots of stuff - it is wise that you check each step by previewing to see if that is what you want. I know I keep saying this like a stuck gramophone record that the order of welding is important. It is. I have shown you that in the one of the beginning video. Just one step and we get different result.
Now to undo the step it is not enough if you just ungroup and change the order. You have to remember first to tap on the weld key so that it turns off and then ungroup (try ungrouping just what you want and not everything) .Only then will the change reflect. Else it will remain the same.
