If you're going to do a recap job, don't waste your time picking and choosing which ones are actually bad. If one is leaking, odds are they will all be leaking soon and the problem will come back. If you want to build a good rep for your repair work, having customers come down with the same issue they sent it to you for a short time later isn't going to do you any favors. Replace all of them while you have the board in your hands the first time even if they test good.
Just curious, can you also do the checkerboard video fix on an SE? I just got one with that problem.