not sure about the banging, but the squeeking and groans sound more like you need to grease those UCA bushings.. once I got a grease gun and pressed some lube in there they have been quiet.
about alignment- I have a calmini 3" SL on my x and I can tell you it took about three tbar readjustments before the torsion bars settled completely. Initially, I cranked them down a bit too much, actually.. to the point where the ball joint mounts were pointed down a bit and the UCAs were on their bumpstops. Firestone ran out of alignment quickly and after their best alignment it was pulling to one side noticeably. I drove it, expecting the tbars to come down a bit and within two weeks my steering was ALL over the place and it was pulling like crazy, like all of a sudden. I took a good look at my TBars and one had settled an extra inch over the other one! well, after I leveled them (flat and even ball joint mounts) the damn thing drove great and the alignment was almost perfect!
Since then, I've adjusted them twice.. each time they were settling less and less- the third round of adjustments were only like 1/2 inch on one side and less on the other. These are calmini tbars btw. I ranked on them at long beach a couple weekends ago and they held their height.
maybe this info helps some of you? I just think when adjusting tbars, you should make the ball joint mounts level, this will give you a good 7" or so over 32s in the wheel well..
whitman