I too use to a Flow fan for nearly a decade. I love the quick entry, but they always end up malfunctioning. The later models (NXT and above) seem to be less troublesome. Older Flows I have all sorts of catastrophic failures besides the usual loose screws (entire highback snapping in half while riding).
I switched to Ride Contrabands. No quite as fast entry as flow, but a little quicker than traditional straps. I find them to be even more comfortable then Flows, and the canted footbeds makes a huge difference to me.