So I checked the flywheel screws and they were tight. I adjusted the presser foot just a little. I change the size of the thread from 138 to a 92 and then it started stitching. I have used 18 in this machine before with out any issues. The machine is 73 years old so i can understand it is getting worn out. I'm 70 and i am feeling the same way. Thank you so much for the response and the suggestions. SO far it seems to be working.