Chaska

Hello I am brand new and joined just to ask!

I love my Singer 15-91 and I think I might of made a mistake. The 15-91 is my primary sewing machine.

My machine is regularly oiled every 10 hours of use as instructed from the user manual. The needle is installed the correct direction all the way into the the hole. The screw is hand tightened but never over tightened. I was using Schmetz Microtex 90/14. I am going to buy sturdier needles. -Maybe my needle was too delicate for the work I was doing.

A month into using the 15-91 I started hearing and feeling a little grinding in the machine. I found black lint caked under the bobbin case. After cleaning it out and replacing it the grinding feeling/sound was gone but then my machine started to misbehave. -Maybe I messed up my timing when I reinstalled my bobbin case.

Besides the needle being too thin and the timing being off is there any other reason my favorite girl would be snapping needles?
Thank you in advance!