Mercury flame sensor replacement part
Mercury flame sensor FSS130150000 (Robertshaw, Invensys) used in a Napoleon GD3000 fireplace gas heater has failed. Mercury safeties are no longer available due to new government restrictions. Looking for an equivalent direct replacement part (new, used, refurbished, whatever) or a strategy to upgrade/repair the unit without having to throw it out and start over. All ideas welcome.
Pool & Spa - Napoleon