An option is to drill the pivot holes at an angle to make the blade shift center, I use that method exclusively now and it has worked 100% so far. Just re-drill the existing holes.
Here some resources on the topic
A tutorial that I did (if you read the thread, you will see the above suggested method described by a member)
http://straightrazorpalace.com/works...cales-fix.html
Blade Centering - Straight Razor Place Library