[DanTwoLakes]

Your attachments are both welt feet. The silver one is a 5/16" welt foot and the black is a 1/4" welt foot. To determine what welt foot to use, add 3/32" to the size of the welt cord and use the welt foot that is the closest. If you're using 5/32" welt cord, which is the normal standard size, add 3/32 to 5/32 and you get 8/32, or 1/4". Use the 1/4" welt foot. 99% of the welt cord you sew will be with a 1/4" welt foot. There is a presser foot on your machine right now.

You don't have the thread right going through the thread guide on the top of the machine, and I can't tell if you ran the thread through the small thread guide just above the needle. See the two pictures. The only time you put the thread through the top guide like that is if you are sewing with very heavy thread, like 207.

Don't use a 1/4" belt, use a 3VX belt (cog belt) or a 3L belt (smooth belt), which are both 3/8" belts.

The oil pan is just a drip pan, and if oil spilled out all over the place, it was oiled way too much. The openings on the machine marked with red paint are where you should oil. You also need to open the cover on the left end of the machine and oil the two wicks in that mechanism. This only takes a couple drops of oil, you don't need to soak the machine with oil. All that does is waste oil.