dreaded zombie back focus

I have just replaced my minolta 50mm 1.7 with a minolta 50mm 1.4 and the back focus is worse.

I tested all my lenses and found that the sony 18-55 focused perfect my 35-105 orig & hand shake are good with the 28-105rs back focusing a bit.

My thoughts are with the zooms they have a depth of focus that will let me get away with the problem but I use my 50mm inside with no flash so at wide open the zombie effect will ruin my shots.

Question-

Has anyone tested a sony 50mm 1.4 for back focus, to get an idea on my chance of getting a good copy I am hopping to get a few people commenting.