There is some chatter about power for the 10254 Winter Holiday Train and some wheel skipping, so i mocked up a mod for it. it is two studs longer. I "Think" it will work for 9v / PF / PU but have not tested it in real life, it the motor/ battery plus 21 extra parts. nothing rare. you don't need to mod this for 9v but it will let you keep the red elements on the engine. submitted by /u/tzidik [link] [comments]