Update.....
Though the FTE problem seemed to be cured by the extra rubber nub I felt that the system was out of whack in 2 ways leading to this malfunction with wolf. 1st the ejector was overpowering the extractor, there needs to be the proper balance between the ejector and extractor. If the ejector is over powering the extractor then it will release the case prematurely, leaving it in the action jamming the next round coming up from the mag. second I think the bolt was disengaging too fast, causing a harsh rapping that you could feel in your cheek, it was uncomfortable and not good for the system, so it needed to be slowed down.
Adjustments......
To tune the ejection/extraction, I bought a sprinco xp 5 coil extractor spring, I also had an o-ring and a rubber insert. I add them all on until the extractor was overpowering the ejector (the cartridge wouldn't get spit out reliably). At this point I removed the o-ring and checked for proper function (you should be able to pull the bolt back and the ejector should spit it out on to the floor even when manipulating the bolt rather slowly). Perfect!
Slowing the bolt.....
I bought a red sprinco buffer spring and replaced the stock one. The difference was pretty noticeable, the harsh rapping was gone , I will probably still add a H2 buffer since I worry that the bolt will be travelling forward too fastnot giving some crappier magazines time to feed the next round ect.... but honestly I haven't had any malfunctions since I did all this and my round count is up to 500.