Any recoomendations on which glow-in-the-dark thread to use?

Help!

Have had a really tough time getting glow-in-the-dark thread to embroider well on our Tajima TEHX-C1501 machines. Madiera's glow-in-the-dark thread used to work ok (at best -- for us anyway) -- but, were discontinued.

Have recently tried Luminary and the kind that All Stitch sells.

Constantly running into thread breaks. Any suggestions on either different supplier and/or other adjustments you've found to be more successful in running it?

Any help and/or suggestions would be so greatly appreciated!

Thanks!
- Todd