Just bought my first ever Colt!!! A New Agent 3" barrel with the Colt stamped laser grip. I take it home, read the manual cover to cover, watch a video for assembly/dis-assembly. Have some fimiliarity with Colts as my sidearm for 8 years as a tanker in the army was a Colt 45 M1911. I get ready to tear it down to check and lube for the very first time... I cock it back to the dis-assembly notch, push the slide stop nub on the right side, the slide stop moves 1/8 inch and stops.. won't come out, WONT even go back in... help!!!