Can anyone explain what the issue is with the rear sights is on the Sheridan's? I have recently been getting back into the pellet world. Grew up with a Sheridan my grandad let me use. It was given to another family member that could care less about it and has no idea where it is now... Through the years I have been building my centerfire collection. Now that I have a son, I have found myself venturing back to the roots and the basics. In the past month, I have bought an FX impact m4, Huben GK1, and Umarex Notos. As cool as the new ones are, I had to get a few sheridans... I recently purchaced a 64 silver streak and a mint blue streak. I keep seeing where folks say they have removed rear sights to avoid issues. What is this issue and what should i be looking for? Thanks!