Not only can I no longer tighten the chuck to secure the bits, but sometimes the chuck gets stuck in one position and it takes effort to get it out. The same thing happened to the drill she replaced, but the drill was five years old. I only use this drill once a week to drill an average of five holes and still it has lasted less than three months. The return window closed less than a month ago so I'll just have to toss it and try to find something that lasts. Should have returned it as soon as…