Just wondering, when your wheel is dented and that in order to true it you must tighten a lot one spoke on one side, and loosen a lot the spoke on the other side, to the point where one spoke is way too tight and the other is way too loose, is there anything to do to even the tension and overcome the dent ? Thanks !
At that point replace the rim. It will never be made to be completely true. If you try some spokes will be over tensioned and may break because of this extra stress.