Parts Help

Hello,I need to replace the support bracket that is shown in the third image.Could not not find it on the site.  Replacing all the parts.The sliding part number is HG0-2001 (Bottom) and HG0-2000 (Top)I believe I need to order:1 - LH Inverted Split Arm ROTO Operator, Vinyl App  39-3291 - Roto Folding Crank Handle, 11/32"  39-2321 - Roto Sash Bracket  39-5541- 2-Bar Hinge Set, 10"  36-048Thanks for your help.Michael