Hello all, I have been working quite a bit with 1.9 riptop and have had great luck. I ordered some 1.1 sil to make a tarp and I cannot for the life of me get a good stitch. Does anyone have any tips or tricks? When I run it thru the machine the top and bottom don't stay even. I've tried pinning it with no luck. It just gets bunched up and the stitches just turn into a rats nest. Although I can't use 1.1 rip stop for a tarp I have some other projects in mind. Is it as hard to sew as the sil ? Thanks in advance!