I am having issues when using the shaded with edges views.Whathappens is that there are extra lines showing up on surfacesthatshould not be there. This usually happens when the object infrontis relatively thin in comparison to the overall part/assembly.Inthis assembly there is an angle frame structure built on theinsidewith a piece of 1/8^th in thick material mated to thefront plane of thestructure. The parts are all coincident and arenot colliding intoeach other.  When I zoom in the lines willgo away but when theview is zoomed out to see an over all that iswhen the issues showsup. Any ideas what might be causing this?