Hey all, i bought a lightly used Mossberg 5500 MKII last night. i got a chance to test it out today after work and there seems to be a problem with ejecting and cycling shells after firing. about half the time, the shells done eject from the chamber (as if the action isnt opening up to release the shell.) when the shell IS attempted to be ejected, it doesnt make it out of the chamber before getting caught by the action about 50% of the time. so, that means it cycles correctly only about 25% of the times fired. is there anything i can do to maybe stiffen up the ejector? how does it work? i plan on giving it a good cleaning and oil job tonight and trying it out again tomorrow to loosen everything up. help please!! Tyler.