big bud sites not opening

Using 5 gal dwc, mylar reflective grow tent with 1000 watt hps. 5 weeks into flower, buds looking great getting bigger every day but I've noticed large bud sites covered in triches that aren't opening. Have searched for related issues and found none. anybody with info to share on this would be greatly appreciated.

they aren't supposed to open those are the pre-flowers you are looking at.