I have a Janome Truth Heart which has a drop in bobbin.
I'm not all that worried with this quilt as it's a kids quilt and it actually looks kinda cool against the red background. But I'm sure I'll have quilts in the future where that won't be so desirable.
I had my class with the store that I purchased the machine from last week and she wasn't even able to find the right combo. She finally gave up and told me to just play with it until I figured it out.