how do i seperate the bottom of a bachmann doodlebug from the rest of the car. got the roof off ok but bottom is being stubborn.

                 gene

just installed sound module in my em1, why do the speed curves used with cv25 run out of sync with the sound. also user defined speed curve does not work. i have 20 soundtraxx decoders and never had this problem. is there something i don't know about bachmann loco with tsunami decoders??

                gene