Quince trees

Haven't visited this group for a long long time. Just wonder if anyone out there grows quince trees and, if so, could give some advice. I have an oldish tree that has lovely blossom but not much else. I am hoping it's okay to write about the process of gardening and not just refer to books I've read.

I'd like some quince advice too. I just had to relocate mine due to a construction project and am crossing my fingers it survived.