Hi, after a long while i am finding some iritating issues. When you use hole feature, you cant use the reference geometry to sketch the position of the hole. The work around is to make the hole in approximate place , and then finish the feature, and after that edit the created sketch. Then go on to defining the requried dimensions and positional information. This is not a disabling problem but when you have 30+holes it gets really old ... and iritating.