Alignment pros/heros wanted!

[SCOTI]

First the backround info: My 74 has been dropped in front w/3" BT spindles & 1 coil removed from the factory V8 springs & a flip kit w/drop shackles out back.

When I dropped it almost 3yrs ago, I replaced all the ball joints, all a-arm bushings, inner/outer tie-rod ends & sleeves, & installed a new idler & pitman arm.

It aligned w/o much drama other than my pet peeve of the steering wheel not being 100% perfectly centered. Well, fast forward to the present w/less than 15K miles & both front tires show excessive inside/outside edge treadwear vs. the center tread & the truck pulls to the left like a SOB. The tires were 255/45/18's on 18x8" wheels & I typically ran 32-35psi of air.

This weekend, I got some new 245/45/18's (I felt the new size was a better fit for the 8" wheels) & my intention is to get the alignment checked ASAP.

Suprisingly, after the new tires were installed the truck doesn't pull @ all; just like after the rebuild.

So WTF gives here? I figured maybe the toe was out of adjustment but since it has excessive wear on both inside & outside I'm not sure.

What could it be? Professional opinions appreciated.