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MU Problem

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ronp:
Morning all,

I'm having a problem MUing two engines.  The engines are both G scale USAT GP38's.  At low speeds I noticed the rear engine was hunting and bumping the front engine.  I separated the engines but still kept them MUed.  While the front engine ran smoothly the rear engine darted up and down in speed.  Both engines when not MUed and run separately run very smoothly at low speeds.  It appears that the rear engine is getting erroneous speed commands when MUed.  I'm new to RailPro and today was my first attempt at MUing, of course I may have set up something incorrectly.  Any help would be appreciated. 

Thank you
Ron 

nodcc4me:
I would try reversing the position of the engines, then MU them again. If the front engine is still hunting, check its maximum current setting.

ronp:
I'll reverse the order and see what happens.  When you say "check it's maximum current setting" do you mean redo the initial current load procedure?

nodcc4me:
Yes, check the full current load setting.  You can run the auto setting again and see if it is the same. Sometimes the setting needs to be tweaked manually when MUing the locomotive.

ronp:
OK, that makes sense.  Because when the engines are run individually, they run smoothly at about the same speed at the same power setting. 

I just reversed positions, now the rear engine runs considerably slower and jerky.  Again hinting at an error in my load settings.  I will redo both.  It will be a while, for safety, they should be outside for this test.  And presently it's raining.

I will report back.  Thanx for the help.

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