Hello:  Is it possible to change the cv's on a dcc equipped engine using the Bachmann Digital Command Control system?

Thanks,
S.S.

Hello:  I would like to open up my Bachmann GP40 to change the LED.  This is the engine that came with the DCC set that Bachmann offers.  On the underside of the unit, it appears that there are two screw ends (not heads) one at the front and one at the back.  They possibly could be rivets.  Has anyone had any experience opening up this engine?

Thanks,
S.S.