Verify a few things first.
I would speculate either the socket on the engine mount is bent (unlikely without cracking the mount), or the leg itself is bent , possibly both are. Harmon Lang, whom likely made them, may be able to advise you on straightening the ones you have, rather than going through the difficult process of trying to replace one, or both and get them drilled correctly. Even if they have to be annealed, then re-heat treated it may be worth while. The fact that your talking only an inch leads me to believe it should be an easy straighten. If there is firewall/engine mount locational misalignment from the build, a mere 1/8" would make a difference putting one leg AFT and one leg FOR enough to generate your description.