Been meaning to post this for a month or so but been buried with year-end tournaments (being state President is more work than they tell you!). Anyway, about a month or so ago my Ultrex started making a grinding noise. It is when the motor is on, not from the steering. Sounds like a bearing and is slowling getting worse. Way too noisy now so I need to get it fixed but like to have an idea before I take it in. Of course right at the 2 year warranty period too!