After praising Bachmann for making the 2-6-6-2T such a smooth running loco, my mind was instantly changed this afternoon when my customer came to pick it up.
I was in the process of demonstrating the loco when the two screws holding the motor in on the front truck LITERALLY FELL OUT allowing the motor to disengage the idler worm gear.
This necessitated removing the front engine block assembly from the loco, remove the motor, retrieve the screws from inside the gearbox, reinsert the screws to hold the motor to the bracket, replace the bracket and motor assembly in the front engine and then remount the engine into the loco.
Then I discovered why the motor mounting screws were probably loose in the first place, just like the drive rod screws on the rear motor block were. I believe they were deliberately left loose so that the beast would actually run with a bent crank pin boss on the rear engine rear driver.
Now everything is properly tight in the front engine it is much stiffer than the rear engine and starts later.
Perhaps getting them to start equally may only require a lot more running in.
I hope so.
Otherwise it will mean I remove the engines again and work on them.
Now my opinion of the Bachmann 2-6-6-2T is, that it is just another piece of badly put together junk from China.