Review on 🔧 Enhanced Performance Orbital Sander by Central Pneumatic by Paul Andrews

My grinder is great except I can't put the locking key in the hole to lock the shaft lock, which I took a closer look and found that the hole in the shaft is too small for the wrench that came with it. The inner shaft may have the correct size hole, but the hole does not line up with the hole in the handle. What does it mean that I can't block the shaft so it doesn't rotate to change pads. The tool itself seems great, but failing to jam the shaft is a deal breaker. Can someone help me?