I am going to assume that you are using good needles, a fresh new needle, a jeans needle for heavy denim, have inserted the needle correctly and pushed all the way up.

If the above is true. I think you need to find another repair person, someone with Singer factory training, an old timer.

Was the bobbin case taken out or anything? If something is hitting that could be the reason. Like debs3 says, try another repair place and explain all your past problems. Something is certainly out of whack for you to keep having this happening time after time.

debs3, yes, all those suggestions were tried and budster, the whole bobbin case was not removed, but the top part of the metal case is removable for cleaning, which I did at some point in the process.

Anyway, I called the guy at VacWay and complained,and explained, he said he would take another look at it...no charge. So it is back there today. Last chance!!

Thanks for your suggestions. Kathie

I know you can remove the top part of the bobbin case, mine is tricky to get back in and I was just wondering if you had it all lined up or if you'd gone further in your general cleaning of that area. I sure hope you get an answer as to what is causing this continuous problem. T&S are such good workers it is a pain to hear of one giving grief. Fingers crossed you have luck -- please let us know here how it goes. Budster

Here's the update. Budster, I really haven't bothered the bobbin casse since the machine was in for repairs and adjustments, etc.

But anyway, I have it back now and the problem was the wrong gears were installed by another repair shop about two yrs. ago. They were beveled at the edges and according to this guy, they were the wrong gears. So he installed the original singer gears (only two as the others were working properly) and hopefully corrected the problem. He said the gears were not meshing and were slipping when I tried to sew thicker seams, consequently throwing the machine out of time.

Now if he had only checked the gears on the second or third visit it would have saved me time, gas and aggrevation. But he only charged me half price since I aready paid him for a repair that didn't work.

Now the machine is working but it is very very loud. I remember the last time the gears were replaced it was loud. Hope it will quiet down after a breaking in period or I'll be down to VacWay again.

Thanks for your interest. Kathie

think it is louder. It happened to me once and the casing on the machine was "off" base so to speak. I'd phone and ask the guy how come the machine is so loud. Make mention of it now just incase something else is a problem. If it still seems loud in a few days go back...yah I know, gas, etc. but getting it fixed now will cause you less problems later. At least you are building a relationship with the repair people. (If someone asks your opinion you can tell them about the first place). I know, I know -- what a pain but it happens to all of us. Fingers crossed you will be stitching quietly in no time. Thanks for the update.