In the beginning the sleeve cap was wide enough but not nearly high enough and the entire sleeve was extremely twisted when I lined up the underarm with the side seam. I get that twist with RTW as well...obviously my arms are weird. Six sleeves and adjustments later--yes I acutally sewed and removed six different sleeves--I wound up with what I need. Thank goodness for muslin. I had to rotate the sleeve seam about 1" forward to get rid of the twist. Another stumbling block was that I hade to remove the left sleeve another five times to get it in with out puckers and wound up lowering the armhole a little and trimming the cap height a little. The second sleeve went in without any problems. Now I just have to decide whether I will leave the sleeves long or make them 3/4 as the pattern called for.