need help with mates in the attached file. BAsically I have a bunk assembly that is inserted in a box assembly. The box assembly has sloping walls. The bunk has angles on either side that need to move in and out based on the distance of the bunk from a floor line. The bunk assembly has limit mates that allow the angles to move, but only the amount the bolts travel in slots. I mate the edge of each angle to the coresponding sloped wall. I mate a line in a sketch to the sloping back wall. When I try to put in a distance mate from the floor to the top of the bunk I get an "over-defining sketch" error. Anyone have any suggestions?