Regarding corns I know that vet Daniel Doherty a specialist in racing Greyhound injuries has developed a new technique for corns which I believe is non surgical. You will find more on corns including Daniel Doherty (Veterinary Surgery in Hillingdon and Uxbridge) and Lori Rose on the Greyhound forums. Just to point out I have never used either service but may be worth researching further if corns present a problem.