Medlar pest problem

[Lee]

For the past few years, my medlar fruits have developed a pest problem. The fruit flesh is dry. Not sure if it’s an insect or disease problem. Anyone else have this problem or know its cause?

[Lpbach]

I have a pest with mine as well. Last year was the first time mine had a lot of fruit but when it was time to pick them, the inside was all dried up. I noticed on the outside of the fruit this year that there is frass…something is boring into them. Anyone know what to do?