My loom came with an 8 dent reed and a 13 dent reed. I was wondering if I'll be likely to need any other reeds and if so what I should get. It's not cheap so I don't want to get the wrong one or get any if not really needed. I'm using a 4-shaft countermarche loom and probably will be working on yarn that's about dk or lighter (not up with the measurements for weaving yet, still working on knitting weights)