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(Sigh) I fell for the BS too. Got one from trainworld for $225. Damn.....this thing has so many issues, design of certain basic parts being the largest one. Lets begin.... The pins that connect the drivers to the rods have oversized heads which snag and run into the the valve gear with each rotation. The timing rod isn't projected out far enough from the rest of the rods, so it rubs them. The gear tower on the rear engine is located too far back on the rear frame and cause this 2 pound loco to balance improperly. It should be closer to the center driver. Its placement cause the 1st drivers of the rear engine to raise up and not contact the rail. The spring on the trailing truck is too stiff and doesn't ride well. The tender weights about 6 oz too much, which reduces the number of cars Challenger can move. I removed that extra lead weight. It's 2 pound body isn't balanced well on the two engines. Not stiff enough. It tilts to far side to side. [V] I've done "tweeking" to most of these problems and now can move 36 cars up our 2% grade. But it runs with sort of a jiggle wobble, more visible on curves. Very dissapointing. Now I'm glad Lionel's leaving the HO market. They don't know what their doing.
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