Question on deform feature accuracy.

I need to flatten a curved t extrusion while keeping the features on the web in accurate positions. I am able to get the general shape but when I measure what the distance between features is there is no consistency for how many thousandths they are over or under. My question is what are the settings I can change to create a more accurate part or if there is a different function that I can use to create an accurate projection of the web features.

SolidworksParts And Features