Looks like we got luckier on our second go around: We took the 4yo on trial and he passed the PPE today! Got x-rays of feet, fetlock and hocks and everything was clean. Jogging and flexions were good. Only thing pointed out was that his feet really needed to be done but fortunately our farrier was there at the same time so we got that taken care of as well.
It was so nerve wracking but such a relief to know we’re starting with a clean slate. Our vet was very happy.
Thanks again for everyone’s valuable input. It did take a little convincing but we’re really glad with where we’ve ended up!