This is a risky project. I would only go for it if the following was true for you:
A. You could afford his upkeep in retirement if he didn’t work out
B. You would be comfortable with PTS to prevent him from ending up in a bad situation if you couldn’t do the above ^
C. You had your own place / could control his management 100%
D. You could get him on 24/7 turnout
I’m not above taking on a horse like this. I have done it in the past. Some young horses just aren’t strong enough to hold a lead undersaddle, so it isn’t always a red flag to me provided they’re sound in other areas.
However, it is risky - you are buying a horse with a physical issue - either lack of strength, or injury, or both. It’s a big gamble. It has worked out for me in the past, and it also hasn’t. We own a horse just like this, that has not been ridden in 10+ years because it didn’t work out. In his case, his difficulty cantering and holding leads persisted despite lots of L-S-D work, injections, ‘corrective’ farriery to help – but you can’t fight a horse’s innate structure, and some horses just are not built to be sound. He is happily retired and a wonderful guy, but I wouldn’t take him on again. We tried for years to get him going, and it was a real shame his body just wasn’t up to the task.
On a more positive note, sometimes it does really boil down to the horse’s management. I’ve had horses come to me with the above issue, and was pleasantly surprised how much shoeing appropriately, AND full turnout changed the strength behind for these horses… However, sometimes cross-firing or the inability to hold a lead well is a sign of stuff management can’t fix, like a suspensory or SI injury. You don’t know until you gamble or foot the bill for more x-rays yourself.
My first OTTB came to us with some major cross-firing issues. It took a year+ to resolve, but he ended up being a wonderful LL eventer for me, and then when I outgrew him, he taught my young sister the ropes up to Training. Very safe, sane, and wonderfully sound horse. He also had 80+ starts before he came to us, and was sounder than any horse I’ve owned. Unfortunately, once he hit 20 he started to go downhill fast … Cervical arthritis :no: I have wondered sometimes if all of his little difficulties (like collected canter, being very tense in dressage, the lead swaps, the lack of a true topline despite being very fit) stemmed from the CA - which I suspect was there all along, but not “bad enough” to harm his athleticism until he was just a bit older. He was PTS at 23, the CA came about hard and fast. :no:
That being said, I would clone him if I could. He was a wonderful first horse.
Good luck!