Ann, glad to hear everything is going okay. I did mean to mention that about Monarchs (and other species) carrying over injuries from molt to molt. And yeah, sometimes they lose part of a tubercle and it never seems to bother them. Just know that they will always be like that from now on. When they molt again, the whole tubercle won't grow back - just the same length they had before.
And give the little guys a break. Molting makes them hungry!