Uploading images permission problem

I am having problems with Network solutions permissions on uploaded images. I can go in and change them but would certainly prefer if they were uploaded with the correct permissions when creating or updating a product.

I have followed the instructions in this thread and it works for the product_insert page but when I get to the code for the product_update page I cannot find it in my code. Is this code for PS4?

I am using PS301
permission needed seem to be 0644 as it worked on the product_insert page, although it look like 0664 in my file manager? go figure?

Can I get the code needed to change image permissions as they are uploaded on the Product_update page please?

thanks very much,
Nancy