Hopefully somebody can shed some light on this bizarre behavior. I received a new SP GS2 last Xmas and it worked perfectly when I put it away for the season. when I set up my holiday layout this year the other Legacy engines work fine but the SP has improper speed on the first 22 speed steps. I jumps forward quickly on the first step and moves faster until step 23 where it slows down dramatically and resumes what seems to be the proper normal speeds through the rest of the range. The chuff is also not timed correctly on the first steps, it's much slower than it should be, only chuffing about 1/4 of what it should. Chuff is timed correctly on all speeds above 22. Tried resetting the loco, changing it do a different address, resetting the Cab2, put a battery in the tender, cleaned the flywheel sensor and I am at wits end. The loco operates normally on all the steps above 22 and when you stop the engine, it decelerates nicely than surges faster just before it stops. All of the lights and other sounds work normal. Thanks for any insight you can provide.
Nick
