I need to get into the guts of this caboose (N&W 6-27623) to re glue the windows. I have it 50% disassembled but it does not seem to want to let me in. Lionel's web site does not appear to be too helpful. any ideas? thanks in advance- I need to get that aqua piece out of the caboose housing and I hate to pry things and risk broken plastic- am I missing something?.