Greetings everyone, I completely disassembled the CZ 82 but now the slide won't drop into the slide? it drops down but then it wont move forward to battery. Frame is fine, pull the trigger and dries fires, safety engages, all small parts are out of the way, etc. The slide stop lever is completely under when the slide goes in so it is not the slide stop. I'm stomped at what is stopping forward advance of the slide, any suggestions?