fauve, I do of lot of these. I call them SET files, because they 'set' values. I think the problem is that your values are HUGE. A value of 28.00 on the Ztrans will take a figure 224 feet backwards. If you want a value of 0.280, then that line should read 0.28, not 28.00. And the Ytrans is pretty wild too. That would put a figure somewhere up at the top of the Empire State Builing. LOL. mac