Breaking in Locos : P2K broken axle gears I haven't actually run a train in about 30 years. I purchased two P2K GP30's and two P2K GP60's, all HO scale. I will eventually get my layout built and use DCC, but for now, I laid some track on plywood and bought a cheapy used DC transformer just to see if they would run. Both of the GP60's run like a dream right out of the box. I mean, at the low end, they will absolutely crawl. Seriously, fantastic, I mean CRAWL. And they have good throttle response, gradually gaining speed as I apply power, not a hitch, beautiful, quiet and smooth, I could not be happier with the performance of these two winners right out of the box. AWESOME. Now, the GP30's are another question. One of them acted like it was frozen up. It just sat there and hummed. I had to turn the flywheel by hand and it felt like something broke loose, after that it would run, but it is balky, it squeals, it is sluggish, and noisey as heck, just an absolute slug. I get the other GP30 out, and pretty much the sme thing, not quite as bad, but awful. Noisey and sluggish, like there is something in the mechanism binding it up. So my question is, will the GP30s get better as they get broken in? And why such a huge difference between the 30's and the 60's? The chassis and everything look pretty much the same, just the 30's are shorter than the 60's.