I have an older 35 marlin from 1964 .I bought it 5 years or so ago from a guy hard up around Christmas time and its shot and performed well . lately its been jamming up on me though , when I fire a round and work the action it jams in the fully open position . it only does this when there's multiple rounds on the feed tube ,it will stick fully open if I smack the lever a few times it frees up but don't always wanna lift the next round up into the chamber ,ive got to work it a few times to pick up the next round . it only does this with multiple rounds in the feed tube .so in other words if I only load 1 in the tube it performs as it should . ive tried it with my 200 gr lead bullet reloads , 180 gr speer jsp reloads and even with empty cases and its the same results every time .anyone have any ideas? if its an easy fix I would rather take care of it myself . there's not much in the way of gunsmiths in this area we have 1 who thinks everything he touches is worth its weight in gold (at least that's what his prices reflect) ,we have another who sends most of his work away for others to fix ,and we have a third who isn't very reliable .so if I can fix it myself I would rather do so .