Sorry for no photos, but what bug in SoCal is most likely to cause buds not to open? And what bugs eat the bad ones? Not balled from humidity.
In the lower part of the garden I have a bunch of new roses, seems like most every one has buds that something ruined. I don't have the issue in the upper garden, but those roses have been there a lot longer and I am guessing that what ever is damaging the buds is already being eaten by good bugs.