Mine was the post you probably responded to -- about too much twist?
Just as a matter of curiosity, were you using suri or huacaya alpaca? I've only been playing with huacaya because I have so much more of it (and since the suri is more valuable, I didn't want to waste any of it!), but for things like lacy shawls, many people prefer suri. It is a bit slipperier, I'm told, but it should give a nice shine to the finished product and has lots more "drape" than huacaya, which is loftier and gives more halo than suri.