Hey Buck Dancer,

Yep there knots they have been bleached it is really difficult to completely dye the knots on darker hair and if you over bleach it just weakens the knots anyway. If you order a custom you can ask to have them bleached a little more which will help. I am sure if you speak to john he could also get a stock system re bleached to more your liking.

There is plenty of information and help on here if you want to have ago at bleaching them yourself and videos on youtube.