I have a .35 marlin 336 that isn't cycling spent casings correctly… I can load it full and work the lever however I want and it does what it's supposed too… as soon as I pull the trigger though, if I work the lever normally it doesn't pull the shot cartridge out of the chamber completely and causes a jam… I've fiddled with it enough to know that I can really baby the lever and it'll cycle properly. Something is off and I'm betting it's a simple fix… any ideas?