@villeah maybe it’s because your pattern is a little bumpy, a lot of people have this problem because it isn’t completely flat. If you set it under something heavy it helps with the bumpy-ness a little.
@ab05 do you know how to make alphas? You just tape down the base strings (there are 20 of them) and then you take a lead string and knot row by row. That’s the short explanation but if you want to know how to make alphas look up Masha knots tutorial.