I don't understand the RAM timing enough to make a good call. I hope that your problem is RAM timing.
I have asked one of the mods for someone to look at your RAM timings.
But you may end up needing to replace the RAM or at least try to find the faulty RAM stick.
Shintaro, asked if I knew a RAM expert and I got a reply back from Nibs today. As you already know, he confirmed the RED from memtest meant replace some RAM but he also mentioned your timings ...