Thanks, GGG, for your advice. Tapes are clean in both engines. Checked for lubrication - all is well greased and oiled (removed some excess grease in one engine's trucks. I run DCS with a Lionel brick and have had several engines running at the same time. Have other lash-ups that function well too. Still I get the differences in speed with these engines when lash-up is uncoupled, smooth running of both engines independently, and stall with breaker after a few feet in lash-up mode. May have to resign myself to not using this configuration.
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