This may sound rather naive, but have you tried running it in reverse first? Not being familiar with the system, I don't know if that's even possible. And from what I (don't) know about DCS, I agree with GRJohn. It may be a binding issue. But Mike, didn't you think the wheels weren't turning when the flywheel was. Broken gear, perhaps? A tooth may have broken off and caused the binding when the wheels go around once (moving about an inch). Just guessing... In the SHS version, the gear on the axle was nylon (?), and could be prone to breaking, or splitting. I can understand any reluctance to open it up or take off the truck frames. Since I'm a bit crazy, I have no such reluctance. Keep us informed, please.
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