I have a 60" long conveyor, with a starting z elevation of 36". If I set the ending elevation at anything greater than 36" and less than 43.87", it reverts the ending elevation to 43.87" (in the quick properties window). However, when I look at the graphic in the 3D space, the graphic is retaining the elevation I key in. I can set the ending elevations to say 36.05" and the graphic will show the conveyor nearly level, but the quick properties window has reset the ending elevation to 43.87".