Front Susp/Alignment issue

[BR3W CITY]

So I'm down to the fact that my front suspension is now the weak point on my truck, and I'm trying to figure out exactly why. Its the only part of the truck the p.o setup that I haven't changed ALL of yet.

Setup; 66 c10 w/ 71-72 style control arms (metal bushing), what look to be drop spindles (unknown) and unknown springs. It does have a decent front sway bar. Seems likebunch of shims on the lower control arms. a Power steering off the same 72 donor. I just added new qa1 DS304 shocks. Total drop is about 5" from what I can tell. The front tires are 235/70/15, which I feel is actually too tall, and are my spare non-slick rear tires. The old tire size I've run was a 235/60/15..a little harder to find.

Pics for height reference (on the larger tire)




Problems;
1. Its always been a bit floaty, but I can expect that from a heavy old lowered truck, with higher sidewalls. The new shocks have improved some of the roll and floatiness.
2. When switching lanes, its very sudden, so when it crosses the groove into the next lane it can be twitchy. This makes is tricky to drive on uneven lanes in construction or similar circumstance.
3. The power steering feels a bit overboosted, both when I had the old engine and sbc p/s pump, and my current lq4 with the hydroboost setup.
4. even at low speed turning, like a uturn or egressing a driveway, the front tires squeal a bit. You can feel the feedback in the wheel, like the front wheel s are fighting each other or tripping over themselves. I really want to fix this so I don't ruin tires. When you look at the tire wear, it does not show "strips" like too much caster or camber would from what I've seen. The tires show sort of a "clawing" outward on the tread. Maybe as if there was way too much toe?

5.there is about 1/2 turn difference on right and left lock. I imagine this just is a result of the pitman arm having been attatched a spline off at some point.


I really appreciate the input, its one of the last things I really need to do to transform the feel.