The C setting was a suggestion from the dealer because of the batting. Works well for me.

She also recommends filling the bobbin while the machine is threaded because it puts more tension on it. I've only done that a couple of times. Old habits are hard to break!

For the most part, I love this machine. The extra room is great! But, I'm still reaching for the lever to raise the presser foot! :)

I just tried a few more times. Setting on C, FM Floating, feeds down, foot down, pulled bobbin thread to the top. I can go just a little ways and the top thread breaks. No tangles though.

Is your needle in correctly? I had that happen and the needle was in backwards. (Don't ask how I mananged that)

Pam, has your thread snapped off inside? That center section of the front between the thread guides comes off. Towards you and up if I remember correctly. I had a thread stuck in there once. I think it can come off the thread guides sometimes, based on things I've read in the past.

Maybe it (or you) need a break for a few. What if you shut down for a few?

On thing I have NOT had to do was to mess with the tension.

Sith the R foot .... Go to tools...set @ free M floating .. and then at the top of that menu....change your thread tension by using the right arrow to raise the # ... then click the tools again to accept & restart. HTH

I have the same machine and noticed that I have to hold the top and bottom threads VERY tight when I first start to sew. This is difficult with all the bulk from the rolled up quilt. Pull the top and bobin threads out about 12 inches to make sure one doesn't pull away when you start. I wrap the threads around one finger to make sure I don't lose them. Hold them tight and take your locking stitches. After I pull up my bobin thread and knot I don't cut it off--I hold them tight and take a few more stitches. Also make sure the "Fix" button is off before you start. I know someone will say this is a waste of thread but it's better than bird's nests-lol! I"m still practicing FMQ but this was one of the problems I was having, too. I wish sometimes I had a third hand to hold the thread while I held everything else in place. Just something that works for me--try it; I hope it works for you.