..... yet .....
Went to 5 places .. auto departments at 2 large retailers ... 2 chain auto parts stores .. and 1 hardware store.
The hardware store has a LARGE sheet of filter material intended for air conditioner units .. about 18" x 24" .. for $2.19 .. might use that if I can't get the Filtron filter foam.
Going to go to a traditional independant auto parts store next .. I think they'll have it.
Or I might try a lawnmower place.
The original Suzuki filter in the FA50 has degraded to the point that it falls apart when you touch it .. and was crumbling and being swallowed into the motor as a 'dust'.
Probably 10% gone .. (along with the dirt it had stopped years ago ... yuck).
Got to get some good stuff in it.