Also, when sewing through several layers of fabric, the feed dogs could be pulling the lower layer at a different rate of speed than the upper layers. Have you tried using a different foot (like a walking foot) on your machine? And do you slow your speed when sewing the thicker areas? Or you could try lowering the feed dogs all together and try doing free motion through the thickest parts.
It's not that you're not 'good at this'.... it's a matter of learning your machine for each particular application. I'm just throwing ideas out there as I don't have your machine so I can't be real specific, but these are things I would try on my own machine.
Also might be a good idea to pick up an old, used... or new machine made for sewing heavier type fabrics, so your new machine doesn't keep getting thrown out of adjustment (if that is the problem). |