This is very important to us.  This is our moto: "If You Make Your Customers Successful, You Will Be Successful".  Now that being said we have no control over the difficulty, so we are working on R & D to make our machines run faster.  Now, here is our promise to our customers, if at anytime before we ship the machine to our customer and the machine will not return a positive ROI within the first year, we will at their option refund 100% of the purchase price of the machine.