I bought this machine a couple of day ago, Phoenix 283F. I haven't threaded it up yet, it takes a different needle system than I'm used too (need to buy needles). I've had a few rounds of cleaning and oiling, it runs well. There is a cam stack in the back I can take out; it's a metal holder taking 4 cams at a time. Has anyone identified the cam type? I was hoping to track down a few cams and a few presser feet.