Hi. The paper get jam in the tractor. Its a 3 sheets forms and it seems to block because of the folding betwen 2 forms. There seems to be some air is making the paper be more thick when it gets to the printhead. There is a ruler (loaded with two springs) that make a pressure on the paper, so it stay close to the printhead plate, maybe thats the cause? i dont know. If you can help me it will be appreciated. Thanks.