I have a Lionel Hudson with TMCC and RailSounds. When I go slow the chuffing sound is fine but when I speed up the chuffing gets intermitent and kinda skips. Like the engine is going to fast for the chuffing. I did the reprograming both with the engine and on the CAB-1 Still the same. Could the 9 volt batt in the tender cause any problems? I'm not sure if the is one in there. On my k-line Allegheny I don't have one in the tender. Should I?