Originally posted by pnj
or could it be that my rim is really bent and there is no way that the spokes will all have the same tension unless I replace the rim?
That is a good insight into wheels
If the rim doesn't
want to be straight, then trying to convince it using spoke tension is ordinarily going to leave the spoke tension uneven, unless the rim itself is unbent first (not easy to do right).
C'est la vie... just keep working on it, and you'll get better and better at the convincing part
You mentioned that you tightened spokes that pull the rim in the direction it needs to go. If possible, also loosen the ones on the other side in that area, unless they're already so loose that they're not really doing anything already. This helps keep your wheel from going out-of-round, for one thing.
If this trend continues, get the LBS to rebuild your wheel with some DT or Wheelsmith 14-gauge spokes and a beefier rim, when you can afford to.