u/Head-Dust4282

Recently I inherited a Leica IIIA from a family member, it seemed to work great and I even shot a roll on it, then recently I tried the slow shutter speeds with the dial on the front and every single slow speed setting acts like its in bulb mode where the shutter stays open as long as you hold the button. I took off the slow speed dial on the front and found a piece of film leader stuck inside the camera, presumably from someone attempting to shoot a roll without trimming the leader, but I don't really dare to disassemble the camera further. My question is, is there an easy fix for this, if not, who can I send this camera to to fix this issue that has the knowledge to deal with such an issue on this camera.