ok i just did the paper test and the reading went up to about 130. i noticed a few things while doing this;1 when i prompted to measure board the z axis moves over to the edge of the board when i checked the sensor reading it said zero i then moved the z axis over manually and it registered the 125-130( without the paper it was barely fifty now) this was on 1 inch thick walnut rollers checked compressed i then tried some 3/4 inch pine and only the back roller compressed sometimes it will find the walnut and continue to measure the board but the pine will never register as being loaded