I need to repair my Superliner 6-29168 with nonfunctioning station sounds and nonworking cabin lights. My first problem is getting the body apart. I am pretty certain the problem is a frayed wire for the cabin lights and I have no idea why the station sounds has quit. But, until I get the body off I won't be able to diagnosis. I have removed the body of my Superliner passenger cars so I know how to take the end caps off and remove the body frame and then remove the cabin but, on the diner the wiring appears to require me to slide the cabin and the body frame out at the same time. I can only get it to slide about 2" then it seems to get blocked. I have included a picture below and ask for any help you may be able to provide.