caster angle ?
i have 2 inch shackle lift on my 80 cj 7. i want to correct the caster and know i need to measure the angle it's off, my question is, where do i measure to see if it is off? like where on the axle? i read the long article about correcting it and understand that, i just don't get how to exactly measure it. i am new to this, any help would be greatly appreciated.