Thanx to both Rich & Jerry. I have saved the PDF for reference.

I was on the right track (I had removed all the screws involved) but just didn't apply enough pressure I guess. I appreciate the quick help guys.

I recently bought two HO scale Bachmann GP9's (came with DCC). They both run great on DC (I have no DCC system). They both came with what look like jumper plugs that I assume can be used if you want to remove the DCC decoders. However, the instructions do not mention them, and I can't figure out how to remove the shell.

Any advice is appreciated.