I coincidently have the NissTec UCA's and Trail Grapplers, too. Mine were pretty bad at first and then figured out to turn the top plate 180*. They are not easy to align.So I got an alignmentnd was told the toe and the caster was off. They were able to get the toe into specs but they said they couldn't do anything for the caster. I have the light racing upper control arms from nisstec, so now I have to figure out how to calculate how much to adjust them.
I can't post pics with AG or I would. Mine has a gold colored plate with spc stamped in the side directly beneath the UCA arm that is rounded on one end and flat on the other. When first installed per the directions the flat end was towards the back. The alignment was horrible and could not be adjusted any further. We called NissTec and they told us to spin that plate around 180* so the flat side was oriented towards the front. That would give us extra adjustment. Just doing that nearly fixed the alignment itself.Slasa when you say to turn the top plate 180, what plate are you referring to? Believe it or not i'm actually having a rough time trying to find a shop that will mess with the uca adjustments.