My Elna Supermatic (aka Bob Goblin) has a serious noise issue. This machine is relatively new to me, and I used it for the first time this week to piece a Halloween quilt. (Because, you know... Goblins and Halloween, right?

) I eventually switched to another, though, because of the terrible racket it was making.
I have already replaced the friction wheel with help from the directions and rental tool from Ray White - I did this before ever using the machine, since you could actually feel the flat spot in the wheel when you turned the machine by hand. I *thought* I had oiled everything properly. Is there another cause any of you Elna fans could imagine?
Thanks in advance for any help!