What will you do if you experience the following problems in your machine while sewing.
1.thread breakage in the bobbin
2.bent or broken needles
3.machine has skipping stitches
4.fabric feed is inconsistent
5.the machine is running,but the needle won't move
6.seams are puckered and distorted
7.thread jams on the throat plate
8.machine has unusual sound
9.the needle is unthreading when start sewing
10.machine has looping stitches