If you've been using the old style dimmer with the aluminum housing and coil rheostat you should try the newer style with the plastic housing and metal contact pads. Maybe it will work out better for you.
For a temp fix you can just run a jumper from the BR wire to the LB/R and bypass the dimmer portion of the switch while leaving the dome light switch intact. To bypass the dome light switch you would have to install a suitable switch between the LG/Y and BK/LB wires.