Any way, the vet cam out with her senior partner & they took one look at Paddy and said that they did not think that he had ulcers, and that it was his back that was the problem, so arranged to come back and x-ray his back, which they have now done and here are the results;
Basically they show that he has severe kissing spines and is totally inflexible along the part of the spine that runs underneath the saddle. The vet said that the fact that he does not currently appear to be in much pain suggests that he has had this injury for some time, but he would have been in quite alot of pain in the past.
The vet said that she didn't think it would be worth operating on him, and that he would not be able to jump again, he might be able to do some low level dressage, or just be a hack.
This is devastating news, after all the problems with his feet, to find out that things are even worse than I thought they were. I am going to have to find out about kissing spines and look at what the options are before I make any decisions.
For the time being Nic is going to continue exercising him by leading him off another horse.