Trouble with longarm bobbins
I was quilting along without any problems, but now, the bobbin tension on my Janome Artistic is super tight when I use an aluminum bobbin (that came with the machine and that I wound myself) but yet is fine when I use the prewound bobbins from Superior threads. It's almost like the aluminum bobbin no longer fits the bobbin case (had trouble getting it out). Any ideas on what this could be? Has anyone else had a problem like this? I've cleaned out lint and can't see anything wrong.
Thanks in advance,
Julie