thank you guys! thx bixby. marxman great engine love the cladding. i really like marc and the history and story i think i prefer to my lionel. marxman thanks for advice i only sanded very top of rail [not edges] oblybwhere contact was made. it was very low conductivity with my voltometer. was maxed at around 9v now i show 12.
thanks as always!
marx for the win
jason