Since the very first week of the game I've noticed an issue when trying to upgrade equipment. For instance I pulled a 299 autorifle from an engram and had another autorifle at 292 I intended to upgrade but got the message "Base Power too low" tagged on the 299. It doesn't add up and I've noticed it intermittently throughout the entire time I've been playing D2. Is there a specific reason, or has this even been reported?