Why won’t new locos pull as well as the ‘old days’? Maybe a few reasons – first the manufacturers had to ‘get the lead out’. Lead is deadly dangerous you know, gosh the CSPIA (our government protecting you) mandates even trace amounts be removed from children’s books, clothing, and playthings. Less lead of course means less weight. Weight helps traction. Second, the wheels have different plating and blackeners. Looks nice, but slippery. We remove it with emery paper before applications of BULLFROG SNOT. Third, the rubber o-ring traction tires were so universally cursed that the factories ceased including them. So we have really nice looking engines, and a wide variety too. With sound, DCC, and they have strong motors, smooth running gear, and are filled with as much weight as lead-less ‘pot metal’ will allow. Try to add additional weight, go ahead, try! Sneak in the ‘ol tungsten putty. There just isn’t much space. But BULLFROG SNOT, now that kicks butt! It adds just the right amount of friction coefficient to make things really work. Yes, it will slip when overloaded, so you won’t fry your DCC. And nothing is easier than BULLFROG SNOT. Well then, why don’t engines come from the factories with BULLFROG SNOT? Hmmmm? Give it time ……