Fox Collectors

I have an A Grade Fox that just had the stock replaced. My safety now is very easy to move and slips on/off without the "click". Is something missing from the reassembly? Thanks for any help.

test it outside unloaded.put safeyt on and try to pull triggers,if it stays on then it may be ok.this test is for manual safety gun and might work for auto safety.the little spring that fits under safety button on very bottom can be slightly bent to increase resistance when sliding safety button. Bobby