I know. It's kind of hit and miss sometimes. A slightly tweaked chassie changes everything too.
I don't think I'm a good enough driver to actually feel the difference between 1 and 2 deg camber for example. Toe settings is another thing. A half turn on a turn buckle changes everything. Sadly this is the setting I feel is the most difficult to get right.

To bad all kits I've had and still have always seems to have 'race slop' by default. Nothing is really tight even when brand new.