UPDATE:
Hollis has gone out of their way to make sure that I came away with the light I wanted and refused to take any money for it. Although they no longer had the parts in house to replace mine or build a new one from scratch, they managed to cannibalize 2 of their stock units to provide me with a new light head that is the same as I had. This is pretty outstanding for a company to trash 2 complete lights just to be able to give a crybaby customer what he wanted. This not only cost them the ability to sell 2 brand new lights, but also the time and labor to create my new light head.
The fact that they would not accept payment for any aspect of this shows that they do indeed make a serious effort to take care of their customers and make good on their products.