I was going to suggest try another design as the one you have may be badly digitized. But the needle wobble doesn't sound good :(
Muffy :)
LATEST NEWS I'M AFRAID IT'S A REPAIR JOB
Many thanks for all your input
Here are some links for you. Call them I did when I was having trouble.
I have a repairman who is very good long time since I have seen him hope he is still there
Oh! It sounds like it may need repair. I hope you are stitching away very soon. I have 2 brothers and cotton runs between 2 and 4 and poly is up near 6 on the non-computerized machine. Call brother - they will help you if they can. If it is under warranty - you have to talk to them anyway!
No, the bit holding the needle should not wobble! When it jams, do you have threadnests underneath? Does the needle completely lock when it jams? Small bits of thread in the bobbin area, can keep the bobbin from turning freely, so clean that area good, checking for stray thread bits. A stray thread caught and wrapped around the upper gears above the needle at top left of the machine can cause a jam, where the needle will not go up or down and a horrible noise from strain on the motor. This happened to mine, and I carefully removed the cover from the gears, clipped and removed the thread pieces with tweezers, until EACH bit was removed. The machine has functioned well since!
Hugs, Angel
many angel you have described just what is happening Thanks will go have a look