I've noticed with my SLA printer (Longer 3D Orange 10) that the prints come out slightly thicker than the actual 3D model. I don't have calipers (just ordered some) but it seems to be about 1mm or more based on how much I had to sand it down. This means that any interlocking parts won't fit in the printed version. Is this normal for SLA printers? Any suggestions to resolve it?