Let’s see if I can explain my issue.  Lately, the things I’ve sewn on my machine “bunch” up.  Every once in awhile I have to stop the machine, lift up the foot and pull the fabric straight.  Does that make sense?  I’ve tried different settings on the machine and nothing helps.  I read something on the internet about how that happens with thin fabrics and to put a piece of paper underneath the fabric while sewing.  That worked, but of course I can’t use paper under an entire project…that’s stupid and then you have to spend tons of time pulling out the paper!  Also, when I first started using the machine it was quiet, but lately it’s started making a bang, bang, bang, noise everytime the needle goes down to the bobbin.  Not sure if I should just ignore it or if that’s a problem.