WA safety working when its not on, hammer wont lock back

[LUTNIT]

Yet another problem with me and airsoft....

Firing a WA SCW2 Expert 5.0 SVI on propane with a metal slide, the trigger jams up exactly like when the thumb safety is on. I searched for this topic and ran into someone who ran into the same problem but fixed it by simply lubing the gun internals, now I tried that and now instead of jamming the trigger 1/3 of the time, now it jams 4/5 of the time.

I disassembled the gun and found that when the thumb safety is removed, IT STILL JAMS!!! I found links to arniesairsoft about WA maintance and stuff and it seemed to tell me that its a problem with my thumb safety, the hole the safety goes into needs to have the edge bevled, but if that was true then it wouldnt jam if the safety was removed, but it does.

*Edit* realized I didnt know what I was going, reassembled the gun putting everything exactly where it came from. Now the hammer will not lock back and the safety will not catch even if I hold the hammer back and try to put the safety on.

Any idea anyone?

Note: I have now completly given up on ever opening any airsoft gun again, if the slightest smallest little thing goes wrong or I want changed, I'm sending it off to someone with the experience, fuck my plans to become a gun doctor, I've already killed an M3 shorty costing me $225 and these WA problems dont help.