Is there a reason you're only using the modeling light instead of the flash? Most monolights allow you to set the modeling light at full power (110 watts in your case), or you can use the proportional setting, which means the modeling light will dim or brighten based upon the setting of your flash power.
The modeling light serves to add an extra bit of light on your subject for the purposes of aiding better focus, and providing a modeling of how the light falls upon your subject. If you're only going to use the modeling light, especially one that is only 100 watts, then you can buy a simple work light reflector from a hardware store for $10 and then return the monolight.
