@equinitis: we were trimming every 4 weeks, but once he got sore we backed off and let them grow a bit more. His last trim was Jan 29th, so 5 weeks & 4 days since the last trim. We are doing exactly what you’ve mentioned above too. It’s just so fristrsting. @Mcdreamer: yes, he tests positive on all 4 & everywhere on them. His feet/soles are also not spongy. They are hard, so that’s the tricky part. And no I haven’t done xrays. My farrier seems to think they aren’t needed and my vet just thinks I need to show him. So i feel kinda stuck in the middle here. Thing is, if I put shoes on him, I’m not fixing the problem........I then would just have a horse with sore feet wearing shoes. It’s a PITA and I hate this! I want to find and fix the problem not just slap shoes on to mask the issue.