First things first, unbolt the top and see if the pin-holes are even.
Attachment 214426
If not, saw back and forth with the bit, putting a bind in the right direction. Make certain a bit of leaning is possible the direction you want to go.
You can also pin it up with the blade in a bind to push the pins over.
Attachment 214427
A tiny bit at the pivot means a lot at the end!
Attachment 214428
Before you do anything, look at where the tang goes into the scales. If the tang is hitting one side and pushing the blade over, sanding on the inside of the offending scale may be in order.