Just ran my Intermountain F3 with LM-3 and TCS KA with clean wheels and clean track. Started out showing usual ample voltage, 12.3v, then started to draw progressively lower voltage, until it crapped out completely on hard-wired track nearest the booster. My circuit breakers showed no shorts. Remember, this is after I had issues with my workhorse Atlas GP7, and looks all too coicidental after updating LM software to 2.30.