At the range last night, I had the slide and spring fly off of my SR22. I reassembled it, thinking maybe I didn't close the take down lever. After a few more rounds fired...it happened again....(Actually my wife was doing the shooting)...so I put it back together again, this time I wiped and cleaned it and made sure the take down lever was snapped firmly . I fired a magazine and it was fine....my wife then fired another magazine...no problems....but on the next magazine, the slide and spring flew off again...now i'm pissed......I got home , took it apart...cleaned it ....the take down lever looked fine. What I'm wondering if slide oil might have caused this problem? I did check the internet and saw that there were some problems with the take down levers.....anyone have any suggestions to fix this problem?