Over the multi-year length of a glass plant campaign, problems arise with root causes traceable to design, engineering, construction and the operational parameters which can change over time. This presentation illustrates real-world production problems arising from those changing needs, practical solutions, and the value of non-resident process reviews such as performed by the member companies of the TECO Group. It often takes an experienced or non-routine study of the problem to first determine the root cause, and then engineer how to best resolve it. This presentation discusses three problem instances - in a throated furnace, the waist area of a float furnace, and the sidewall refractory replacement maintenance activities.