PB control arms caster

[68is4me]

Using PB 1 inch forward upper and lowers arms not narrowed on 68 c10. How much caster are people gaining with these arms?

I took it in to get aligned and caster is 14.7 for the left and 13.7 for the right. To me that just seem like to much. Have tried adjusting with the shims but caster angle does not move much. The upper arms are installed correctly. I have also emailed PB to find out how much caster is gained with these arms but no response yet.