Diopter correction lens needed

[Jim Evidon]

I need a GFL (-4) diopter correction lens for a G2 viewfinder. While the Contax website lists them, they evidently no longer stock any Contax parts :bang: . B&H lists them but are out of stock. Does anyone know where I may obtain one new or used? I could also use a 46mm lenscap p/n GK-41, but I can always buy one from B&H or similar. Please feel free to e-mail me directly if you have a source for the diopter lens.
Jim Evidon
AlfaJim@dc.rr.com

[Socke]

I need only 0.75 but a correction for a corneal irregularity so I had my optician fit a lens in the cap on the viewfinder. It works :-)