Originally Posted by
jcrow
........... I have 50 wt. thread in top and bobbin but one is Presencia thread and one is Aurifil. Does that make a difference? Should it both be the same?
So then, try it with matching threads!
Both may be 50 wt, but being different brands they are not the SAME.
So try both top/bottom with Aurifil and see what happens.
By now, you have probably messed around with the settings enough that you'd be best to send your machine back to the factory default and start again. Amazingly that may be all it takes!