To update you- From Jenny’s Sewing Studio
Singer has just replenished our stock of Futura XL400/ SESQ/ and XL550 bobbin cases. They have been out of stock for so long I have almost given up on ever seeing them again.
We have also received the Futura XL400/ SESQ/ and XL550 needle plate. 
Another back order item that is also now in stock is the Singer extension table 
for the 7258, 7412, 7258 model- 052017
If you have been searching for any of these items I have a few to offer you at time time.
Jenny
