Pilot light would not light after installed; I had to remove and tweak the igniter location with respect to the pilot nozzle. Also, the gasket was not adhered to the cover plate as it should be, so that made the installation more challenging than it needed to be.
If you're buying this unit, you're pretty much stuck though, because as far as I can tell, the the assembly is designed so that the thermocouple cannot be replaced. You have to buy this entire assembly.
The $12.99 shipping fee seemed high, considering that the unit took nearly a week to arrive, not 2 days as indicated by Sears at the time the purchase was made.