Going to undo everything I sewed last Sunday!! Old machine and new seams don't jive, plus I discovered I was off about 1/8 inch on several of my strip cuts, so need to get those out and re-cut new ones. Doesn't sound like much, but I had three strips to a set, and about 20 sets done. Now why those strips didn't show up at the begining I'll never know!! But I'l be putting the ripper and new machine to work today.