Looking for correct replacement operator, and tips on corrosion prevention and lubrication

Hi,
I have several right and left operators that need to be replaced due to severe corrosion. They seem to match the dimensions for your 39-025 and 39-026 except that the arm extension is 2 3/16" center-to-center. All other dimensions are the same.

Also, do you have any suggestions on how to prevent corrosion (see pictures), and where and how I should lube the windows?

The seller of these windows has "special" replacement operators that are supposedly designed for our warm, salty, humid environment but they cost about twice as much!

Thanks!

Here's a picture of one that hasn't corroded. The bottom section with the two holes is rectangular, rather than tapered like the pictures on your website, but I'm hoping that doesn't matter.

Thanks Dave, I'll go ahead and order those.

I guess I should've been more clear with my question. I was wondering if you have suggestions on how to lube the window itself, rather than the just operator.

And are there any parts that wear out and that I should be inspecting for possible replacement?

I'll try again to attach a picture of the corroded operator, in case you have additional suggestions.

While I'm at it, are there other parts that should be inspected/replaced?