What strategies do experienced cyclists use to adapt to unexpected disruptions on race day, such as inclement weather, road closures, or mechanical issues, and how do they prioritize problem-solving versus maintaining pace and focus? Are there specific mental or physical techniques that help to manage the stress and pressure of dealing with unexpected challenges during a competitive event? How do cyclists weigh the importance of sticking to their pre-race plan versus being flexible and responsive to changing circumstances, and what role does experience and instinct play in making these decisions?