I'm a fairly new rigid heddle weaver and I have a problem achieving a balanced weave. No matter how hard I beat, I cannot get as many weft shots per inch as I have warp ends per inch. I notice after I beat a weft shot, as I move the heddle back into position, the row I just beat seems to sort of "bounce" back toward the heddle, leaving a gap. I have been using a wide tooth comb to push it back into place, but even so I can't get the rows close enough together. For instance, I am currently working on a project on a 10 dent heddle and I can only get 7 weft rows in an inch. Are some types of yarn harder to pack in than others? Anyone have any advice? Thanks.