I just bought a MTH Premiere 20-3473-1 K4 Pacific Torpedo and when I was running it on my layout it was wobbling like it had a improperly installed traction tire. After checking it out I noticed the eccentric crank was hitting against the compressor when the center driver was turning. Everything appears to be fitted properly so I just removed the compressor since it is hidden from the skirting anyway. I was wondering if anyone else in here had the same issue or you may want to check yours for the same problem. I'll write MTH and maybe they will send a replacement.
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