My 6-8 year old 20' Brogdan fruited for the first time this year holding about 25 fruit. All was going well till a couple weeks ago when all the fruit developed 1" scab?? spots that rotted through on the lower half all in the same location. Is this going to be an ongoing annual issue? I know Brogdan are supposed to be thin skinned and wonder if that could be a contributing factor. I have never sprayed any of my fruit trees and really don't want to start now. One of the reasons I selected a Brogdan was I thought it was pretty much free of significant disease issues. Thanks.