ALCo S4 Cab removal?

[STLRAIL]

I'm in the process of detailing a small fleet of Bachmann ALCo S4's for my freelance railroad. I need to remove the cab to trim the hood extension (that goes into the cab), but I can't seem to find anything on how the cab is removed. I've got it loose, but it won't come off. Has anyone removed the cab on one of these before? Any help is appreciated!

[bapguy]

There is a tab in each corner plus one on each side of the cab. It looks like the side of the cab towards the bottom needs to be spread out a bit to get it off.      Joe