The worst thing is if you have 2 snap points close together that are supposed to be totally different groups and it catches the wrong group first and easiest that your rotations and positions can appear wrong but in reality it’s just the wrong points grabbing each other. Like my dock stairs. Uses ramp points but the ramp points werect grabbing each other first causing stairs to build backwards to each other. The big thing is to type debugstructures and watch what points are stuck to each other and figure out what has gone on.