I had my 69RR aligned today and it was not pretty. The best caster they could get was -1.2 on the Drivers side and +1.2 on the passenger side. Quite a bit under the +3 to +5 that everyone suggests. I went online and see that there are different offset bolts available. My thought is to get a +2.5 for the left UCA and then the best reading I can get is +1.25 both left and right side. Do I understand correctly? Any better idea for stock UCA's? Is +2.5 the biggest?