I have an artisan Toro 4000. I am no seemstress and I am not a pro leather worker either but I like to make a few things here and there. My Artisan is skipping stitches on latigo- its very difficult to sew. It has started to skip stitches on the smaller stuff as well. I have adjusted the tension, changed needles, changed the bobbin, done more practice pieces, ect. I am just at a loss of what to do next. Please help me before I go insane!