Maximum caster with stock UCAs?

[Weezer]

2000 LC with 1.5” lift over stock front with 30mm spring spacers rear. 1.5” rake. I’m running 275 70 18s with 40lbs pressure front and rear. Tie rod ends are new OEM. Ball joints and bushings are all tight. Wheel bearings are new and adjusted well. Toyota dealer aligned it today and was only able to get caster to 1.8 degrees left and 1.9 degrees right. Is this pretty much maximum caster available on my 100? Will I have to use aftermarket UCAs to get more caster or do you think the tech could get more out of the stock caster adjustments? Toe and camber are well within Toyota specs.
It drives ok but steering feels a bit “floaty” at 70 to 75mph on a smooth straight hwy.
Thanks in advance,
Norris

 

[2001LC]

How's your steering rack mounting bushing. As they age steering will wonder on HWY.

 

[Weezer]

Forgot to mention....I just installed new poly rack bushings also.

 

[dinnertime]

I was able to get 2.3ish with a 2.5 lift running 34s. It drove terribly before the alignment as it had less than 1 degree. I want more than 2.3 and will buy some spec control arms to resolve that problem.

 

[Weezer]

So I should be able to get a bit more. I’ll try that before I spend 600 plus on new UCAs.