we been starting batch of mug runs and we are haveing a crease in the middle of the paper when it comes out, its only spoilt a couple. we are luckly as out of four that come of oven two have creases in them,( most of the time) everything is the same, temp, mugs ect, the paper is the same. I open up a new pack and it did feel different (always use tex print xp). Any suggestions or just one of those things. We have relex the clamps a bit still the same. We even looked inside the clamps for lumps, any ideas welcome