For full disclosure, I don't have any experience with dual extruders or the bulldog lite but I'll try to help!

I believe there is a section in the marlin firmware that you have to modify to allow you to use dual extruders. It's likely that from the LCD unless you changed something, you would not be able to change the second extruder's esteps. I think you should take a look through the marlin firmware for a second esteps setting.