Maybe it was the new fuel that worked.....
Maybe it was the purging process...
When I purged, I completely emptied the chamber, then I re pressed the nozzle 5 or 6 additional times to make sure every bit of the old fuel was out before I refilled.
If your lighters are lighting, but the flame sux, it's probably a fuel issue... I think....
My new new years resolution.. Every time my lighter runs out of fuel, I'm going to purge before I refill to keep my lighter healthy ..