Thank you everyone. I have a lot of studying to do. I did find the problem with the pin. There is a screw that holds it in place so I took it out and cleaned the passage for the pin and the tension works great now. I did a stupid though. I found that the bobbin tension wasn't right so I loosened the screw and did too much and it popped out and I can't find it. It is so tiny it could have gone anywhere so now I need to find another screw. I didn't want to do too much work on it until I found out if it would work. Now I will get down to business. This 115 doesn't have the fancy face plate on the front. It is very plain but it does have all the decals so it is pretty. I have to get the rhythm of a treadle since I haven't used one since I was a child and I am much older now.
Thank you again!!!!!!
Lynda