I can't really see a big problem by looking at the pictures... maybe the last pics shows some slight wilting of sugar leaves. Like Stone suggested, if it's bud rot get to it early. I've had a couple buds affected on one of my plants this year as well. Bud rot will look just like caterpillar damage minus the caterpillars and poop.
If it's just the tips of your sugar leaves turning brown and crispy, it may just be due to nutrient burn. Bot rot will start with wilting of leaves and the entire area around it.
If it's just the tips of your sugar leaves turning brown and crispy, it may just be due to nutrient burn. Bot rot will start with wilting of leaves and the entire area around it.