Good evening. I am new to the forum - This is my second attempt to post so sorry if the previous one shows up as a duplicate. I just purchased what I was told was a non running astronaut M4. Had a dead battery which leaked. I have ordered a new battery for it. I opened the case and cleaned out most of the debris from the battery compartment. There is however a small piece of something lying between the base of the battery post (the one with the yellow wire attached to it) and extending behind the green plastic wall of the battery compartment. In the photo it just looks like a greyish piece of debris, but under the microscope it is pretty linear. I'm wondering if it could be a corroded coil wire. Does anyone know if there is supposed to be a fine coil wire in that location? Thanks for the help.