Situation: a residential startup and you find a repair is also needed (like a broken rotary head). 6 zones, with 4 zones of 4 rotary heads each and two zones of maybe 5 misters each. If the head replacement takes 10 minutes extra, do you just charge extra for the parts on top of the startup price? Or do you also charge additional labor for the 10 minutes in addition to the parts charge? How much time do you allot for a residential startup, say a typical 6 zone like above? And for ones with additional zones? What if a startup has no repairs but 75% of the heads get stuck down from new grass roots that grew over the heads and you have to cut the grass away (adding maybe an extra 20 minutes to your usual time allotment for a "normal" startup time)?