Zero errors on 1 pass is a good start, but I would run 2-3 passes to be sure, based on your memtest+2.11 screenshot you had 12 faults by the end of pass 3. Its certainly looking hopefull that the combination of correct timings, a bit more voltage, and layout of the sticks/slots may have resolved the problem
. I am also not suprised that the reaper would want a bit more than the default 1.8V.
