Lens repair solder question

Hey guys,

I know there are a couple members who do repairs here, but a friend and I are going to attempt it ourselves.

8 lenses to repair to make 2 working virtual boys. Should be able to get some working.

My question is this… do you need to solder all of the pins, such as this:

View post on imgur.com

Or do you only need to do these ones:

View post on imgur.com

Note the top and bottom aren’t all soldered.

Thoughts?

Thanks!