I've taken 3 apart, and have 2 left.
Interesting result by the way when I went shooting. I shot one that I didn't completely clean. I only added some G96 to the bolt. When shooting 180 grain hunting ammo I had to manually eject the case most of the time. After 20 shots I had to do this for every round.
A buddy of mine was shooting a SVT-40 that I dissembled and completely cleaned while adding G96 to all the parts. A bit of Rem oil was also added to the action rails. His ejected without problems.
The gas system wasn't adjusted for either rifle and they were on the same settings. The temperature was also around 2 degrees which may have contributed to the ejection issue.