Very frequently when helping implement a new ISO 9001 based quality management system and helping establish a set of core objectives, when it comes to on-time delivery (or whatever you call it according to your circumstances) most would guess that their performance was around 80% to 90%, but when they actually started measuring it, they were closer to 50% to 60%. Once they started to actually measure it, and resolved the issues that interfered, scores improved. Sometimes it took a while. One of those companies that I continued to call on for over 15 years eventually were consistently scoring 99+%. None of it was difficult, just plug away at the issues as they come up. One of the first issues that usually pops up is inaccurate forecasting on how long it will take to get the order through the system. Salespeople often need to learn or develop tools to aid in their accuracy. It starts with accurately tracking the actual performance.