On my Dell OEM Bluetooth Keyboard, I was never able to get numbers working. The setkbdmap command was simply being ignored. After many experiments I finally got a line that does work. I plugged it into your connection manager script and now it works automagically. THis is the line that my keyboard needed:

setxkbmap -device $EXTKBDID -I -I/usr/share/X11/xkb-chinook -rules $KBDRULES -model $KBDMODEL -layout $KBDLAYOUT -print|xkbcomp -i 4 - $DISPLAY
piping through xkbcomp was the only thing that worked for me. Oddly enough, it works without having to hit a key on the internal keyboard first.

I believe the Dell OEM keyboard is the same as the
Think Outside keyboard which I'm having the same problem with. The line you suggest to add is inserted into the connection manager. Can you show me the steps that are necessary to do that since I'm not a programmer? The other questions is how do you get the straight vertical line character to put between print and xkbcomp?