Have you watched YouTube videos by Juki Junkies? My go to when I have questions. Here is a link about FMQ and shows set up they recommend. Even though this is not on frame it's really good. Also check out videos on tension for bobbin. Hope you find the answer as the TL on the Cutie is an awesome combination.
https://www.youtube.com/watch?v=eoESDZADank
Also you might try contacting Grace Company to see if there are any suggestions they have. They also have great YouTube videos; Tuesdays with Grace just completed a 4-5 week series all about tension.
Don't give up.