I bought a Delta OL-1000 overlocker 5 or 6 years ago but never had it out of the box until this week. It had seized completely due to the original lubricant going gunky while it stood in the box. After a couple of hours of removing covers & re-lubricating, I got it to run freely. However, every time re-threading was immediately followed by the left needle thread snapping. Being a total novice to the use of overlockers I didn't know whether the problem was down to my ignorance or a machine malfunction. There was another problem also in that the front feed dog wasn't pulling the fabric at all. Upon examination I found that the front dog retaining screw was very loose, which allowed it to drop below the surface & not grip the fabric. Once I tightened this retaining screw, all the other problems went away. That screw obviously had'nt been tightened during manufacture - a black mark for Aldi! Incidentally, when I tried to phone the helpline on 01283 762704 I found it was 'Number Unobtainable'so if anything else goes wrong I think I'll struggle to get it sorted. I've found nothing useful on the web but if anybody out there has any info or links, I;d be very pleased to hear from them.