new WildCat hard to tame!!!

i got a new fx wildcat and have had a few issues, not bad ,,,now when i shoot i loose the 2nd stage,,, ive done zero adjusting,,, trigger goes in and out ,,,sometime it just fires upon pull... other time i butt up to a 2nd stage ,,5 to 10 good shots... then 5 to 10 bad shots,,,, back in forth i go,, ,sometime if i give the stock a little spank,,,,and the 2nd stage comes back ,,crazy please any thoughts .opinions welcome,,,pat
 
I would suspect the clevis pin also. Is yours a recent model? I ask because I thought FX started using a more solid clevis pin in early 2016? I just bought a used .22 wildcat (barely used) and the date on the block say December 2015 and I have the chintzy clevis on mine. It hasn't given me any problems yet so I'm not going to worry until it does. Let us know how you make out.