Any Bernette owners: What I need to know is this. Is there anything special I'll need to know concerning these models? I have the manuals and I trust the machines are in good condition, some 15 yrs old or so, little used after their kids were toddlers. My sister's family is selling their house, the kids are "out of the coop" age so the house is too big for them. My sis wants to give me her sewing machine and serger to add to my "family" of 2 basic Brother sewing machines and a Brother serger( hers has differential feed, mine doesn't). I THINK the snap-on presser feet even are interchangeable for both machines which would be just great. I feel like I'm the richest and best loved girl - well,65yrs and some..)in the world and it's Xmas all year round!