I also have no experience with that paper. Perhaps double coating from the other direction (first from the long direction ... second coating from the short direction) will help. I don't double coat but I understand some do routinely. Also maybe a more dilute solution by adding a few drops of distilled water will do a better job. I use Arches Paltine with a puddle pusher and add distilled water to my emulsion mix and find coating to be easy.