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Reply to "Refreshing an MPC GP9 - repair the e-unit or put the shell on a new chassis?"

No have not tried swapping a shell. Have a GP9 from the early 90's with 2 truck mounted motors and electronic e unit. Have replaced that electronic e unit a couple of times. On similar engines have replaced electronic e units on those also. I usually just run them in one direction but they still just don't hold up. Maybe  pulling to many cars up and down grades . I don't know just don't have much luck with them.

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