12 round pool

I purchased my 12’ round pool in 2007. It is a Sharkline brand 12 x 48 " CAPTIVA" model. My top inner rail stabilizers are rustued out and need replacing. I have measurements folowing the INYO Diagram:

A= curved: 37 7/8"

B= straight 36 7/8"

c= 5/8" x 5/8"                     I Have purchased a 4 pack of aluminum rails from INYO last year to replace the worst of the ones I had, but now the rest all need replacing. The curved aluminum Rails were    A=43" long   B=42" approx.

Assuming the same rule of thumb for the 1" difference between A and B measurements, will theses rails work? I realize I may have to cut the last one. If not, Are there rails available at my original part length in steel or aluminum? I could not find them on INYO website.